All schools / S
Ontario schools starting with S
1,125 schools. Select any school for its EQAO results, ranking and neighbourhood context.
| School | City | Board | Level |
|---|---|---|---|
| S A Cawker PS | Oshawa | Durham DSB | elementary |
| S Geiger PS | Massey | Rainbow District School Board | elementary |
| S T Worden PS | Courtice | Kawartha Pine Ridge DSB | elementary |
| Sacred Heart | Teeswater | Bruce-Grey Catholic DSB | elementary |
| Sacred Heart | Wingham | Huron-Perth Catholic DSB | elementary |
| Sacred Heart Catholic Elementary School | Niagara Falls | Niagara Catholic DSB | elementary |
| Sacred Heart Catholic Elementary School | PARIS | Brant Haldimand Norfolk Catholic DSB | elementary |
| Sacred Heart Catholic HS | Newmarket | York Catholic DSB | secondary |
| Sacred Heart Catholic S | Kirkland Lake | Northeastern Catholic DSB | elementary |
| Sacred Heart Catholic School | Rockwood | Wellington Catholic DSB | elementary |
| Sacred Heart Catholic School | Wolfe Island | Algonquin and Lakeshore Catholic DSB | elementary |
| Sacred Heart Catholic Sep S | Parkhill | London District Catholic School Board | elementary |
| Sacred Heart Catholic Sep S | Batawa | Algonquin and Lakeshore Catholic DSB | elementary |
| Sacred Heart HS | Walkerton | Bruce-Grey Catholic DSB | secondary |
| Sacred Heart HS | Stittsville | Ottawa Catholic District School Board | secondary |
| Sacred Heart of Jesus | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| Sacred Heart of Jesus | Burlington | Halton Catholic DSB | elementary |
| Sacred Heart of Jesus Sep S | Lanark | Catholic DSB of Eastern Ontario | elementary |
| Sacred Heart S | Mildmay | Bruce-Grey Catholic DSB | elementary |
| Sacred Heart S | Cornwall | Catholic DSB of Eastern Ontario | elementary |
| Sacred Heart S | Langton | Brant Haldimand Norfolk Catholic DSB | elementary |
| Sacred Heart Sep S | Espanola | Huron-Superior Catholic DSB | elementary |
| Sacred Heart Sep S | Guelph | Wellington Catholic DSB | elementary |
| Sacred Heart Sep S | Toronto | Toronto Catholic District School Board | elementary |
| Sacred Heart Sep S | Marmora | Algonquin and Lakeshore Catholic DSB | elementary |
| Sacred Heart Sep S | Midland | Simcoe Muskoka Catholic DSB | elementary |
| Sacred Heart Sep S | LaSalle | Windsor-Essex Catholic DSB | elementary |
| Sacred Heart Sep S | Sarnia | St. Clair Catholic District School Board | elementary |
| Sacred Heart Sep S | Sioux Lookout | Northwest Catholic DSB | elementary |
| Sacred Heart Sep S | Port Lambton | St. Clair Catholic District School Board | elementary |
| Sacred Heart Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| Saginaw PS | Cambridge | Waterloo Region DSB | elementary |
| Sagonaska School The | Belleville | Provincial Schools | elementary |
| Saint Andre Bessette Catholic Secondary School | London | London District Catholic School Board | secondary |
| Saint Edith Stein E S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| Saint Francis Catholic Secondary School | St Catharines | Niagara Catholic DSB | secondary |
| Saint Gabriel the Archangel Catholic School | Barrie | Simcoe Muskoka Catholic DSB | elementary |
| Saint John Paul II Catholic Elementary School | Kitchener | Waterloo Catholic DSB | elementary |
| Saint Kateri Tekakwitha Catholic Secondary School | Thorold | secondary | |
| Saint Margaret of Scotland | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| Saint Mary's Sep S | Huntsville | Simcoe Muskoka Catholic DSB | elementary |
| Saint Michael Catholic High School | Niagara Falls | Niagara Catholic DSB | secondary |
| Saint Patrick Sep S | Cobalt | Northeastern Catholic DSB | elementary |
| Saint Paul Catholic High School | Niagara Falls | Niagara Catholic DSB | secondary |
| Saint-Jean-de-Brébeuf | London | Conseil scolaire catholique Providence | elementary |
| Saint-Vincent | North Bay | Le C.S. catholique Franco-Nord | elementary |
| Sainte-Jeanne D'Arc | London | Conseil scolaire catholique Providence | elementary |
| Salem PS | Elora | Upper Grand DSB | elementary |
| Saltfleet HS | Stoney Creek | Hamilton-Wentworth DSB | secondary |
| Sam Chapman Public School | Markham | York Region DSB | elementary |
| Sam Sherratt PS | Milton | Halton DSB | elementary |
| Samuel Hearne Middle S | Scarborough | Toronto DSB | elementary |
| San Lorenzo Ruiz | Markham | York Catholic DSB | elementary |
| San Lorenzo Ruiz R.C.S. | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| San Marco Catholic S | Woodbridge | York Catholic DSB | elementary |
| Sandalwood Heights | Brampton | Peel District School Board | secondary |
| Sandhills Elementary Public School | Kitchener | Waterloo Region DSB | elementary |
| Sandowne PS | Waterloo | Waterloo Region DSB | elementary |
| Sandwich SS | LaSalle | Greater Essex County DSB | secondary |
| Sandwich West PS | LaSalle | Greater Essex County DSB | elementary |
| Santa Maria Sep S | Toronto | Toronto Catholic District School Board | elementary |
| SATEC@W A Porter CI | Scarborough | Toronto DSB | secondary |
| Saugeen District Secondary School | Port Elgin | Bluewater DSB | secondary |
| Saunders SS | London | Thames Valley District School Board | secondary |
| Savant Lake PS | Savant Lake | Keewatin-Patricia DSB | elementary |
| Sawmill Creek E S | Gloucester | Ottawa-Carleton DSB | elementary |
| Sawmill Valley PS | Mississauga | Peel District School Board | elementary |
| Scarborough Village PS | Scarborough | Toronto DSB | elementary |
| Schomberg PS | Schomberg | York Region DSB | elementary |
| School of Experiential Education | Toronto | Toronto DSB | secondary |
| Schreiber PS | Schreiber | Superior-Greenstone DSB | elementary |
| Schumacher PS | Schumacher | DSB Ontario North East | elementary |
| Scott Central PS | SANDFORD | Durham DSB | elementary |
| Scott Young PS | Omemee | Trillium Lakelands DSB | elementary |
| Seaforth PS | Seaforth | Avon Maitland DSB | elementary |
| Seaway District HS | Iroquois | Upper Canada DSB | secondary |
| Second Street Jr & Md S | Etobicoke | Toronto DSB | elementary |
| Secord PS | East York | Toronto DSB | elementary |
| Selby PS | Selby | Limestone DSB | elementary |
| Selwyn PS | East York | Toronto DSB | elementary |
| Senator Gibson PS | Beamsville | DSB of Niagara | elementary |
| Senator O'Connor College School | Toronto | Toronto Catholic District School Board | secondary |
| Seneca Central PS | York | Grand Erie DSB | elementary |
| Seneca Hill PS | North York | Toronto DSB | elementary |
| Seneca Trail PS | Oshawa | Durham DSB | elementary |
| Settler's Green PS | Mississauga | Peel District School Board | elementary |
| Seventh Street Jr S | Etobicoke | Toronto DSB | elementary |
| Severn Avenue PS | Ottawa | Ottawa-Carleton DSB | elementary |
| Severn Shores Public School | Orillia | Simcoe County DSB | elementary |
| Shakespeare PS | Stratford | Avon Maitland DSB | elementary |
| Shannen Koostachin | Hamilton | Hamilton-Wentworth DSB | elementary |
| Shanty Bay PS | Shanty Bay | Simcoe County DSB | elementary |
| Sharon PS | Sharon | York Region DSB | elementary |
| Shaughnessy PS | North York | Toronto DSB | elementary |
| Shaw Public School | Brampton | Peel District School Board | elementary |
| Shelter Bay PS | Mississauga | Peel District School Board | elementary |
| Sheppard Centre School | — | Toronto Catholic District School Board | secondary |
| Sheppard PS | Kitchener | Waterloo Region DSB | elementary |
| Sheppard PS | North York | Toronto DSB | elementary |
| Sherbrooke PS | Thunder Bay | Lakehead DSB | elementary |
| Sheridan Park PS | Mississauga | Peel District School Board | elementary |
| Sheridan S | Oakville | Halton DSB | elementary |
| Sherwood Mills PS | Mississauga | Peel District School Board | elementary |
| Sherwood Public School | OSHAWA | Durham DSB | elementary |
| Sherwood SS | Hamilton | Hamilton-Wentworth DSB | secondary |
| Shingwàkons Public School | Stittsville | Ottawa-Carleton DSB | elementary |
| Shirley Street Jr PS | Toronto | Toronto DSB | elementary |
| Shoreham PS | North York | Toronto DSB | elementary |
| Silver Birches PS | North Bay | Near North DSB | elementary |
| Silver Creek PS | Mississauga | Peel District School Board | elementary |
| Silver Creek Public School | Georgetown | Halton DSB | elementary |
| Silver Pines PS | Richmond Hill | York Region DSB | elementary |
| Silver Springs PS | Scarborough | Toronto DSB | elementary |
| Silver Stream PS | Richmond Hill | York Region DSB | elementary |
| Silverheights PS | Cambridge | Waterloo Region DSB | elementary |
| Silverthorn CI | Etobicoke | Toronto DSB | secondary |
| Silverthorn Community School | Toronto | Toronto DSB | elementary |
| Silverthorn PS | Mississauga | Peel District School Board | elementary |
| Simcoe Comp S | Simcoe | Grand Erie DSB | secondary |
| Simcoe Shores Secondary School | Barrie | secondary | |
| Simcoe Street PS | Niagara Falls | DSB of Niagara | elementary |
| Sinclair SS | Whitby | Durham DSB | secondary |
| Sioux Mountain PS | Sioux Lookout | Keewatin-Patricia DSB | elementary |
| Sioux Narrows PS | Sioux Narrows | Keewatin-Patricia DSB | elementary |
| Sioux North High School | Sioux Lookout | Keewatin-Patricia DSB | secondary |
| Sir Adam Beck Jr S | Etobicoke | Toronto DSB | elementary |
| Sir Adam Beck P.S. | Baden | Waterloo Region DSB | elementary |
| Sir Albert Love Catholic S | Oshawa | Durham Catholic DSB | elementary |
| Sir Allan MacNab SS | Hamilton | Hamilton-Wentworth DSB | secondary |
| Sir Arthur Carty Sep S | London | London District Catholic School Board | elementary |
| Sir Arthur Currie PS (Elementary) | London | Thames Valley District School Board | elementary |
| Sir Edgar Bauer Sep S | Waterloo | Waterloo Catholic DSB | elementary |
| Sir Ernest MacMillan PS | Burlington | Halton DSB | elementary |
| Sir Frederick Banting SS | London | Thames Valley District School Board | secondary |
| Sir George Etienne Cartier PS | London | Thames Valley District School Board | elementary |
| Sir Guy Carleton SS | Nepean | Ottawa-Carleton DSB | secondary |
| Sir Isaac Brock P.S. | Guelph | Upper Grand DSB | elementary |
| Sir Isaac Brock PS | Brampton | Peel District School Board | elementary |
| Sir Isaac Brock PS | London | Thames Valley District School Board | elementary |
| Sir James Dunn PS | Wawa | Algoma DSB | elementary |
| Sir James Whitney S | Belleville | Provincial Schools | elementary |
| Sir James Whitney School for the Deaf | Belleville | secondary | |
| Sir James Whitney/Sagonaska Secondary School | Belleville | Provincial Schools | secondary |
| Sir John A Macdonald CI | Toronto | Toronto DSB | secondary |
| Sir John A Macdonald PS | Belleville | Hastings and Prince Edward DSB | elementary |
| Sir John A Macdonald PS | London | Thames Valley District School Board | elementary |
| Sir John Moore Community | Corunna | Lambton Kent District School Board | elementary |
| Sir Oliver Mowat CI | Toronto | Toronto DSB | secondary |
| Sir Richard W. Scott | Markham | York Catholic DSB | elementary |
| Sir Robert Borden HS | Nepean | Ottawa-Carleton DSB | secondary |
| Sir Samuel B Steele Jr | Scarborough | Toronto DSB | elementary |
| Sir Samuel Steele PS | Whitby | Durham DSB | elementary |
| Sir Wilfrid Laurier CI | Toronto | Toronto DSB | secondary |
| Sir Wilfrid Laurier PS | Markham | York Region DSB | elementary |
| Sir Wilfrid Laurier PS | BRAMPTON | Peel District School Board | elementary |
| Sir Wilfrid Laurier PS | Hamilton | Hamilton-Wentworth DSB | elementary |
| Sir Wilfrid Laurier SS | London | Thames Valley District School Board | secondary |
| Sir Wilfrid Laurier SS | Orleans | Ottawa-Carleton DSB | secondary |
| Sir William Gage Middle S | Brampton | Peel District School Board | elementary |
| Sir William Mulock SS | Newmarket | York Region DSB | secondary |
| Sir William Osler Elem S | Dundas | Hamilton-Wentworth DSB | elementary |
| Sir William Osler PS | Bradford | Simcoe County DSB | elementary |
| Sir William Stephenson PS | Whitby | Durham DSB | elementary |
| Sir Winston Churchill PS | Brampton | Peel District School Board | elementary |
| Sir Winston Churchill PS | Nepean | Ottawa-Carleton DSB | elementary |
| Sir Winston Churchill SS | Hamilton | Hamilton-Wentworth DSB | secondary |
| Sir Winston Churchill SS | St Catharines | DSB of Niagara | secondary |
| Sister Catherine Donnelly Catholic School | Barrie | Simcoe Muskoka Catholic DSB | elementary |
| Sixteenth Avenue PS | Richmond Hill | York Region DSB | elementary |
| Sloane PS | North York | Toronto DSB | elementary |
| Smith PS | Grimsby | DSB of Niagara | elementary |
| Smithfield Md S | Etobicoke | Toronto DSB | elementary |
| Smithfield PS | Brighton | Kawartha Pine Ridge DSB | elementary |
| Smiths Falls District CI | Smiths Falls | Upper Canada DSB | secondary |
| Smithson PS | Kitchener | Waterloo Region DSB | elementary |
| Smithville Public School | Smithville | DSB of Niagara | elementary |
| Smooth Rock Falls PS | Smooth Rock Falls | DSB Ontario North East | elementary |
| Somerset Drive PS | Brampton | Peel District School Board | elementary |
| Sophiasburgh Central PS | Picton | Hastings and Prince Edward DSB | elementary |
| South Branch E S | Kemptville | Upper Canada DSB | elementary |
| South Carleton HS | Richmond | Ottawa-Carleton DSB | secondary |
| South Crosby PS | Elgin | Upper Canada DSB | elementary |
| South Dorchester PS | Belmont | Thames Valley District School Board | elementary |
| South Edwardsburg PS | Johnstown | Upper Canada DSB | elementary |
| South Grenville DHS | Prescott | Upper Canada DSB | secondary |
| South Huron DHS | Exeter | Avon Maitland DSB | secondary |
| South March PS | Kanata | Ottawa-Carleton DSB | elementary |
| South Meadow Elementary School | Stoney Creek | Hamilton-Wentworth DSB | elementary |
| South Perth Centennial PS | St Marys | Avon Maitland DSB | elementary |
| South Ridge PS | Tillsonburg | Thames Valley District School Board | elementary |
| South River PS | South River | Near North DSB | elementary |
| South Shore Education Centre | Nipissing | Near North DSB | elementary |
| SouthFields Village PS | CALEDON | Peel District School Board | elementary |
| Southridge PS | Kitchener | Waterloo Region DSB | elementary |
| Southside PS | Woodstock | Thames Valley District School Board | elementary |
| Southview PS | Napanee | Limestone DSB | elementary |
| Southwold PS | St Thomas | Thames Valley District School Board | elementary |
| Southwood Park PS | Ajax | Durham DSB | elementary |
| Southwood PS | Windsor | Greater Essex County DSB | elementary |
| Southwood SS | Cambridge | Waterloo Region DSB | secondary |
| Spencer Avenue ES | Orangeville | Upper Grand DSB | elementary |
| Spring Valley Elementary School | Ancaster | Hamilton-Wentworth DSB | elementary |
| Spring Valley PS | Brighton | Kawartha Pine Ridge DSB | elementary |
| Springbank PS | Woodstock | Thames Valley District School Board | elementary |
| Springbrook Public School | Brampton | Peel District School Board | elementary |
| Springdale Public School | Brampton | Peel District School Board | elementary |
| Springfield PS | Springfield | Thames Valley District School Board | elementary |
| Springfield PS | MISSISSAUGA | Peel District School Board | elementary |
| Spruce Glen PS | Huntsville | Trillium Lakelands DSB | elementary |
| Spruce Ridge Community School | Durham | Bluewater DSB | elementary |
| Sprucecourt Public School | Toronto | Toronto DSB | elementary |
| Sprucedale PS | Shakespeare | Avon Maitland DSB | elementary |
| St Agatha Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Agnes | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St Agnes of Assisi | Woodbridge | York Catholic DSB | elementary |
| St Agnes Sep S | North York | Toronto Catholic District School Board | elementary |
| St Agnes Sep S | Waterloo | Waterloo Catholic DSB | elementary |
| St Agnes Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Aidan Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Albert | Toronto | Toronto Catholic District School Board | elementary |
| St Alexander Sep S | North Bay | Nipissing-Parry Sound Catholic DSB | elementary |
| St Alfred Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Aloysius Sep S | Kitchener | Waterloo Catholic DSB | elementary |
| St Aloysius Sep S | Stratford | Huron-Perth Catholic DSB | elementary |
| St Alphonsus Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Ambrose Sep S | Stratford | Huron-Perth Catholic DSB | elementary |
| St Ambrose Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Andre Bessette Catholic School | Ajax | Durham Catholic DSB | elementary |
| St Andrew | Orangeville | Dufferin-Peel Catholic DSB | elementary |
| St Andrew C S | Woodbridge | York Catholic DSB | elementary |
| St Andrew Catholic | Nepean | Ottawa Catholic District School Board | elementary |
| St Andrew Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Andrew's Middle School | North York | Toronto DSB | elementary |
| St Andrew's Sep S | St. Andrew's West | Catholic DSB of Eastern Ontario | elementary |
| St Andrews Cath. S | Killaloe | Renfrew County Catholic DSB | elementary |
| St Andrews PS | Scarborough | Toronto DSB | elementary |
| St Angela Catholic S | Windsor | Windsor-Essex Catholic DSB | elementary |
| St Angela Merici | Woodbridge | York Catholic DSB | elementary |
| St Angela Merici ES | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Angela Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Ann Sep S | Thunder Bay | Thunder Bay Catholic DSB | elementary |
| St Ann's Sep S | Penetanguishene | Simcoe Muskoka Catholic DSB | elementary |
| St Anne Cambridge Sep S | Cambridge | Waterloo Catholic DSB | elementary |
| St Anne Catholic S | Richmond Hill | York Catholic DSB | elementary |
| St Anne E S | Kanata | Ottawa Catholic District School Board | elementary |
| St Anne French Immersion Sep S | Windsor | Windsor-Essex Catholic DSB | elementary |
| St Anne S | Blenheim | St. Clair Catholic District School Board | elementary |
| St Anne Sep S | Hanmer | Sudbury Catholic DSB | elementary |
| St Anne Sep S | Kitchener | Waterloo Catholic DSB | elementary |
| St Anne Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Anne Sep S | Iroquois Falls | Northeastern Catholic DSB | elementary |
| St Anne's Catholic S | Clinton | Huron-Perth Catholic DSB | secondary |
| St Anne's Catholic School | Cornwall | Catholic DSB of Eastern Ontario | elementary |
| St Anne's Sep S | Sarnia | St. Clair Catholic District School Board | elementary |
| St Anne/Sainte-Anne SS | Belle River | Windsor-Essex Catholic DSB | secondary |
| St Anselm Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Anthony Catholic S | Thornhill | York Catholic DSB | elementary |
| St Anthony French Immersion Catholic S | London | London District Catholic School Board | elementary |
| St Anthony of Padua | Milton | Halton Catholic DSB | elementary |
| St Anthony S | Ottawa | Ottawa Catholic District School Board | elementary |
| St Anthony Sep S | Harrow | Windsor-Essex Catholic DSB | elementary |
| St Anthony Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Anthony Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Anthony's Sep S | Chalk River | Renfrew County Catholic DSB | elementary |
| St Anthony's Sep S | Kincardine | Bruce-Grey Catholic DSB | elementary |
| St Antoine Daniel Sep S | Victoria Harbour | Simcoe Muskoka Catholic DSB | elementary |
| St Antoine Daniel Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Augustine | Markham | York Catholic DSB | secondary |
| St Augustine Catholic S | Cambridge | Waterloo Catholic DSB | elementary |
| St Augustine of Canterbury Sep | Toronto | Toronto Catholic District School Board | elementary |
| St Augustine S | Ottawa | Ottawa Catholic District School Board | elementary |
| St Augustine Sep S | Dundas | Hamilton-Wentworth Catholic DSB | elementary |
| St Augustine SS | Brampton | Dufferin-Peel Catholic DSB | secondary |
| St Barbara ES | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Barbara Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Barnabas S | Toronto | Toronto Catholic District School Board | elementary |
| St Bartholomew Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Basil | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Basil Sep S | White River | Huron-Superior Catholic DSB | elementary |
| St Basil The Great College | Toronto | Toronto Catholic District School Board | secondary |
| St Bede Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Benedict | Orangeville | Dufferin-Peel Catholic DSB | elementary |
| St Benedict Catholic SS | Cambridge | Waterloo Catholic DSB | secondary |
| St Benedict Catholic SS | Sudbury | Sudbury Catholic DSB | secondary |
| St Benedict Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Benedict Sep S | Unionville | York Catholic DSB | elementary |
| St Bernadette | Barrie | Simcoe Muskoka Catholic DSB | elementary |
| St Bernadette Catholic S | Ajax | Durham Catholic DSB | elementary |
| St Bernadette Catholic S | London | London District Catholic School Board | elementary |
| St Bernadette E S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Bernadette Sep S | Oakville | Halton Catholic DSB | elementary |
| St Bernadette Sep S | Dundas | Hamilton-Wentworth Catholic DSB | elementary |
| St Bernadette's Sep S | Sutton West | York Catholic DSB | elementary |
| St Bernard Catholic S | Whitby | Durham Catholic DSB | elementary |
| St Bernard of Clairvaux S | Waterford | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Bernard Sep S | Thunder Bay | Thunder Bay Catholic DSB | elementary |
| St Bernard Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Bernard's Sep S | Orillia | Simcoe Muskoka Catholic DSB | elementary |
| St Bonaventure Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Boniface Sep S | Scarborough | Toronto Catholic District School Board | elementary |
| St Boniface Sep S | Maryhill | Waterloo Catholic DSB | elementary |
| St Boniface Sep S | Zurich | Huron-Perth Catholic DSB | elementary |
| St Brendan Catholic School | Stouffville | York Catholic DSB | elementary |
| St Brendan Sep S | Scarborough | Toronto Catholic District School Board | elementary |
| St Brigid Cath S | Stouffville | York Catholic DSB | elementary |
| St Brigid E S | Georgetown | Halton Catholic DSB | elementary |
| St Brigid S | Ottawa | Ottawa Catholic District School Board | elementary |
| St Brigid Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Brigid Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Brother André CHS | Markham | York Catholic DSB | secondary |
| St Bruno Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Carthagh's Catholic S | Tweed | Algonquin and Lakeshore Catholic DSB | elementary |
| St Catharines CI & VS | St Catharines | DSB of Niagara | secondary |
| St Catherine Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Catherine of Alexandria | Georgetown | Halton Catholic DSB | elementary |
| St Catherine of Siena Catholic | Ajax | Durham Catholic DSB | elementary |
| St Catherine of Siena Elementary School | Barrie | Simcoe Muskoka Catholic DSB | elementary |
| St Catherine of Siena ES | London | London District Catholic School Board | elementary |
| St Catherine of Siena Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Catherine of Siena Sep S | Woodbridge | York Catholic DSB | elementary |
| St Catherines Sep S | Metcalfe | Ottawa Catholic District School Board | elementary |
| St Cecilia | Oakville | Halton Catholic DSB | elementary |
| St Cecilia Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Cecilias S | Port Dover | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Charles College | Sudbury | Sudbury Catholic DSB | secondary |
| St Charles Garnier | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Charles Garnier Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Charles Garnier Sep S | Richmond Hill | York Catholic DSB | elementary |
| St Charles Sep S | Bradford | Simcoe Muskoka Catholic DSB | elementary |
| St Charles Sep S | Chelmsford | Sudbury Catholic DSB | elementary |
| St Charles Sep S | Glencoe | London District Catholic School Board | elementary |
| St Charles Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Christopher | Burlington | Halton Catholic DSB | elementary |
| St Christopher Catholic S | Oshawa | Durham Catholic DSB | elementary |
| St Christopher Sep S | WINDSOR | Windsor-Essex Catholic DSB | elementary |
| St Christopher Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Clare Catholic E S | Woodbridge | York Catholic DSB | elementary |
| St Clare Catholic S | Orleans | Ottawa Catholic District School Board | elementary |
| St Clare of Assisi | Stoney Creek | Hamilton-Wentworth Catholic DSB | elementary |
| St Clare Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Clare Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Clement Sep S | Woodbridge | York Catholic DSB | elementary |
| St Clement Sep S | Etobicoke | Toronto Catholic District School Board | elementary |
| St Clement Sep S | St Clements | Waterloo Catholic DSB | elementary |
| St Columba Catholic Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Columban Sep S | Dublin | Huron-Perth Catholic DSB | elementary |
| St Conrad | North York | Toronto Catholic District School Board | elementary |
| St Cornelius S | Caledon East | Dufferin-Peel Catholic DSB | elementary |
| St Cyril Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Daniel S | Ottawa | Ottawa Catholic District School Board | elementary |
| St Daniel Sep S | Kitchener | Waterloo Catholic DSB | elementary |
| St David Catholic SS | Waterloo | Waterloo Catholic DSB | secondary |
| St David of Wales Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St David Sep S | Dorchester | London District Catholic School Board | elementary |
| St David Sep S | Sudbury | Sudbury Catholic DSB | elementary |
| St David Sep S | Maple | York Catholic DSB | elementary |
| St Davids Public School | St Davids | DSB of Niagara | elementary |
| St Demetrius Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Denis Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Dominic Catholic SS | Bracebridge | Simcoe Muskoka Catholic DSB | secondary |
| St Dominic Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Dominics Sep S | Oakville | Halton Catholic DSB | elementary |
| St Dorothy Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Dunstan Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Edmund Campion Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Edmund Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Edmunds PS | Tobermory | Bluewater DSB | elementary |
| St Edward S | Nipigon | Superior North Catholic DSB | elementary |
| St Edward Sep S | Markham | York Catholic DSB | elementary |
| St Edward Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Edward Sep S | Westport | Catholic DSB of Eastern Ontario | elementary |
| St Elizabeth Ann Seton Sep S | Nepean | Ottawa Catholic District School Board | elementary |
| St Elizabeth Catholic HS | Thornhill | York Catholic DSB | secondary |
| St Elizabeth S | Ottawa | Ottawa Catholic District School Board | elementary |
| St Elizabeth School | Wallaceburg | St. Clair Catholic District School Board | elementary |
| St Elizabeth Sep S | Cambridge | Waterloo Catholic DSB | elementary |
| St Elizabeth Sep S | Thunder Bay | Thunder Bay Catholic DSB | elementary |
| St Elizabeth Sep S | Etobicoke | Toronto Catholic District School Board | elementary |
| St Elizabeth Seton Catholic ES | Burlington | Halton Catholic DSB | elementary |
| St Elizabeth Seton Catholic S | Pickering | Durham Catholic DSB | elementary |
| St Elizabeth Seton Sep S | Newmarket | York Catholic DSB | elementary |
| St Elizabeth Seton Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Elizabeth Seton Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Emily | Nepean | Ottawa Catholic District School Board | elementary |
| St Emily | Woodbridge | York Catholic DSB | elementary |
| St Eugene Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Eugene Sep S | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St Faustina Elementary School | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Fidelis S | Toronto | Toronto Catholic District School Board | elementary |
| St Finnan's Catholic S | Alexandria | Catholic DSB of Eastern Ontario | elementary |
| St Florence Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Frances Cabrini S | Delhi | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Francis de Sales S | Toronto | Toronto Catholic District School Board | elementary |
| St Francis de Sales Sep S | Ajax | Durham Catholic DSB | elementary |
| St Francis de Sales Sep S | Smiths Falls | Catholic DSB of Eastern Ontario | elementary |
| St Francis of Assisi Catholic S | Guelph | Wellington Catholic DSB | elementary |
| St Francis of Assisi E S | Innisfil | Simcoe Muskoka Catholic DSB | elementary |
| St Francis of Assisi S | Petawawa | Renfrew County Catholic DSB | elementary |
| St Francis of Assisi Sep S | Orleans | Ottawa Catholic District School Board | elementary |
| St Francis of Assisi Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Francis of Assisi Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Francis of Assisi Sep S | Georgetown | Halton Catholic DSB | elementary |
| St Francis S | London | London District Catholic School Board | elementary |
| St Francis S | Sudbury | Sudbury Catholic DSB | elementary |
| St Francis Sep S | Thunder Bay | Thunder Bay Catholic DSB | elementary |
| St Francis Sep S | North Bay | Nipissing-Parry Sound Catholic DSB | elementary |
| St Francis Sep S | Sault Ste Marie | Huron-Superior Catholic DSB | elementary |
| St Francis Xavier Catholic | Markham | York Catholic DSB | elementary |
| St Francis Xavier Catholic HS | Hammond | Catholic DSB of Eastern Ontario | secondary |
| St Francis Xavier Elementary School | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Francis Xavier Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Francis Xavier SS | Mississauga | Dufferin-Peel Catholic DSB | secondary |
| St Gabriel Lalemant Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Gabriel Sep S | Windsor | Windsor-Essex Catholic DSB | elementary |
| St Gabriel Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Gabriel the Archangel | Woodbridge | York Catholic DSB | elementary |
| St George S | Ottawa | Ottawa Catholic District School Board | elementary |
| St George Sep S | London | London District Catholic School Board | elementary |
| St George-German PS | St George | Grand Erie DSB | elementary |
| St George's Jr S | Etobicoke | Toronto DSB | elementary |
| St George's PS | London | Thames Valley District School Board | elementary |
| St Gerald Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Gerard Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Gregory E S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Gregory Sep S | Cambridge | Waterloo Catholic DSB | elementary |
| St Gregory Sep S | Powassan | Nipissing-Parry Sound Catholic DSB | elementary |
| St Gregory Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Gregory Sep S | Nepean | Ottawa Catholic District School Board | elementary |
| St Gregory the Great Catholic Academy | Woodbridge | York Catholic DSB | elementary |
| St Gregorys Catholic S | Picton | Algonquin and Lakeshore Catholic DSB | elementary |
| St Hedwig Catholic S | Oshawa | Durham Catholic DSB | elementary |
| St Helen Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Helen Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Henry Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Hilary E S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Hilary Sep S | Red Rock | Superior North Catholic DSB | elementary |
| St Hubert Sep S | North Bay | Nipissing-Parry Sound Catholic DSB | elementary |
| St Ignatius of Loyola Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Ignatius of Loyola SS | Oakville | Halton Catholic DSB | secondary |
| St Ignatius SS | Thunder Bay | Thunder Bay Catholic DSB | secondary |
| St Isaac Jogues Catholic S | Pickering | Durham Catholic DSB | elementary |
| St Isaac Jogues Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Isaac Jogues Elementary School | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Isidore Sep S | Kanata | Ottawa Catholic District School Board | elementary |
| St Jacobs PS | St Jacobs | Waterloo Region DSB | elementary |
| St James | Maple | York Catholic DSB | elementary |
| St James | Lively | Sudbury Catholic DSB | elementary |
| St James Catholic S | Kanata | Ottawa Catholic District School Board | elementary |
| St James Catholic S | Windsor | Windsor-Essex Catholic DSB | elementary |
| St James HS | Guelph | Wellington Catholic DSB | secondary |
| St James Major | Sharbot Lake | Algonquin and Lakeshore Catholic DSB | elementary |
| St James S | Thunder Bay | Lakehead DSB | elementary |
| St James Sep S | Seaforth | Huron-Perth Catholic DSB | elementary |
| St James Sep S | Tottenham | Simcoe Muskoka Catholic DSB | elementary |
| St James Sep S | Ajax | Durham Catholic DSB | elementary |
| St James Sep S | Eganville | Renfrew County Catholic DSB | elementary |
| St James Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St James the Apostle Sep S | Stoney Creek | Hamilton-Wentworth Catholic DSB | elementary |
| St Jane Frances Catholic S | North York | Toronto Catholic District School Board | elementary |
| St Jean Brebeuf Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Jean de Brebeuf | Woodbridge | York Catholic DSB | secondary |
| St Jean de Brebeuf Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Jean de Brebeuf Sep S | Bradford | Simcoe Muskoka Catholic DSB | elementary |
| St Jean de Brebeuf SS | Hamilton | Hamilton-Wentworth Catholic DSB | secondary |
| St Jerome ES | Gloucester | Ottawa Catholic District School Board | elementary |
| St Jerome S | Kirkland Lake | Northeastern Catholic DSB | elementary |
| St Jerome Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Jerome Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Joachim Sep S | Ancaster | Hamilton-Wentworth Catholic DSB | elementary |
| St Joachim Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Joachim Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Joan of Arc Catholic ES | Oakville | Halton Catholic DSB | elementary |
| St Joan of Arc Catholic HS | Maple | York Catholic DSB | secondary |
| St John Bosco Alternative CHS | Guelph | Wellington Catholic DSB | secondary |
| St John Bosco Catholic Elementary School | Oshawa | Durham Catholic DSB | elementary |
| St John Bosco Catholic S | Brockville | Catholic DSB of Eastern Ontario | elementary |
| St John Bosco S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St John Bosco Sep S | Woodbridge | York Catholic DSB | elementary |
| St John Bosco Sep S | Barry's Bay | Renfrew County Catholic DSB | elementary |
| St John Bosco Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St John Brebeuf Sep S | Erin | Wellington Catholic DSB | elementary |
| St John Catholic HS | Perth Road | Catholic DSB of Eastern Ontario | secondary |
| St John Catholic School | Arthur | Wellington Catholic DSB | elementary |
| St John Chrysostom | Newmarket | York Catholic DSB | elementary |
| St John de Brebeuf Sep S | Kingsville | Windsor-Essex Catholic DSB | elementary |
| St John E S | Perth | Catholic DSB of Eastern Ontario | elementary |
| St John Fisher Catholic S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St John Fisher Sep S | Forest | St. Clair Catholic District School Board | elementary |
| St John French Immersion Catholic S | London | London District Catholic School Board | elementary |
| St John of the Cross | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St John Sep S | Guelph | Wellington Catholic DSB | elementary |
| St John Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St John Sep S | Garson | Sudbury Catholic DSB | elementary |
| St John the Apostle S | Nepean | Ottawa Catholic District School Board | elementary |
| St John the Baptist | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St John the Baptist Sep S | Belle River | Windsor-Essex Catholic DSB | elementary |
| St John the Evangelist | Woodslee | Windsor-Essex Catholic DSB | elementary |
| St John the Evangelist Catholic | Whitby | Durham Catholic DSB | elementary |
| St John the Evangelist Sep S | Weston | Toronto Catholic District School Board | elementary |
| St John Vianney | Toronto | Toronto Catholic District School Board | elementary |
| St John Vianney Catholic School | Barrie | Simcoe Muskoka Catholic DSB | elementary |
| St John Vianney Sep S | Windsor | Windsor-Essex Catholic DSB | elementary |
| St John's College | Brantford | Brant Haldimand Norfolk Catholic DSB | secondary |
| St Johns Sep S | Burlington | Halton Catholic DSB | elementary |
| St Josaphat Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Joseph Markham | Markham | York Catholic DSB | elementary |
| St Joseph S | Cambridge | Waterloo Catholic DSB | elementary |
| St Joseph Aurora S | Aurora | York Catholic DSB | elementary |
| St Joseph Catholic HS | Nepean | Ottawa Catholic District School Board | secondary |
| St Joseph Catholic S | River Canard | Windsor-Essex Catholic DSB | elementary |
| St Joseph Catholic S | Uxbridge | Durham Catholic DSB | elementary |
| St Joseph Catholic S | Oshawa | Durham Catholic DSB | elementary |
| St Joseph Catholic S | Belleville | Algonquin and Lakeshore Catholic DSB | elementary |
| St Joseph College | Toronto | Toronto Catholic District School Board | secondary |
| St Joseph Island Central S | Richards Landing | Algoma DSB | elementary |
| St Joseph Morrow Park | Toronto | Toronto Catholic District School Board | secondary |
| St Joseph Richmond Hill S | Richmond Hill | York Catholic DSB | elementary |
| St Joseph Sep S | Clinton | Huron-Perth Catholic DSB | elementary |
| St Joseph Sep S | Arnprior | Renfrew County Catholic DSB | elementary |
| St Joseph Sep S | Fergus | Wellington Catholic DSB | elementary |
| St Joseph Sep S | Geraldton | Superior North Catholic DSB | elementary |
| St Joseph Sep S | Guelph | Wellington Catholic DSB | elementary |
| St Joseph Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Joseph Sep S | Tilbury | St. Clair Catholic District School Board | elementary |
| St Joseph Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Joseph Sep S | Stratford | Huron-Perth Catholic DSB | elementary |
| St Joseph Sep S | South Porcupine | Northeastern Catholic DSB | elementary |
| St Joseph SS | Mississauga | Dufferin-Peel Catholic DSB | secondary |
| St Joseph The Worker CS | Thornhill | York Catholic DSB | elementary |
| St Joseph's | Corunna | St. Clair Catholic District School Board | elementary |
| St Joseph's HS | Windsor | Windsor-Essex Catholic DSB | secondary |
| St Joseph's HS | St. Thomas | London District Catholic School Board | secondary |
| St Joseph's HS | Renfrew | Renfrew County Catholic DSB | secondary |
| St Joseph's S | PORT ELGIN | Bruce-Grey Catholic DSB | elementary |
| St Joseph's S | Acton | Halton Catholic DSB | elementary |
| St Joseph's S | Tillsonburg | London District Catholic School Board | elementary |
| St Joseph's Sep S | Toledo | Catholic DSB of Eastern Ontario | elementary |
| St Joseph's Sep S | Calabogie | Renfrew County Catholic DSB | elementary |
| St Joseph's Sep S | Gananoque | Catholic DSB of Eastern Ontario | elementary |
| St Joseph's SS | Cornwall | Catholic DSB of Eastern Ontario | secondary |
| St Joseph/Scollard Hall SS | North Bay | Nipissing-Parry Sound Catholic DSB | secondary |
| St Josephine Bakhita Cath Elem S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Josephs S | Simcoe | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Josephs Sep S | Dryden | Northwest Catholic DSB | elementary |
| St Jude Catholic S | Vankleek Hill | Catholic DSB of Eastern Ontario | elementary |
| St Jude Catholic S | London | London District Catholic School Board | elementary |
| St Jude Sep S | Ajax | Durham Catholic DSB | elementary |
| St Jude Sep S | Thunder Bay | Thunder Bay Catholic DSB | elementary |
| St Jude Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Jude Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Jude's S | Ingersoll | London District Catholic School Board | elementary |
| St Julia Billiart | Markham | York Catholic DSB | elementary |
| St Julia ES | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Justin Martyr | Unionville | York Catholic DSB | elementary |
| St Kateri Tekakwitha CES | Markham | York Catholic DSB | elementary |
| St Kevin Catholic S | Scarborough | Toronto Catholic District School Board | elementary |
| St Kevin S | Welland | Niagara Catholic DSB | elementary |
| St Kevin Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Lawrence Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Leo Catholic S | Brooklin | Durham Catholic DSB | elementary |
| St Leo Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Leo Sep S | Brantford | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Leonard Sep S | Manotick | Ottawa Catholic District School Board | elementary |
| St Leonard Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Louis Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Louis Sep S | Keewatin | Kenora Catholic DSB | elementary |
| St Louis Sep S | Leamington | Windsor-Essex Catholic DSB | elementary |
| St Louis Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Luigi Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Luke Catholic Elementary School | Waterloo | Waterloo Catholic DSB | elementary |
| St Luke Catholic Learning Centre | Maple | York Catholic DSB | secondary |
| St Luke Catholic S | North Bay | Nipissing-Parry Sound Catholic DSB | elementary |
| St Luke E S | Oakville | Halton Catholic DSB | elementary |
| St Luke S | Ottawa | Ottawa Catholic District School Board | elementary |
| St Luke Sep S | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St Luke the Evangelist Catholic Elementary School | Whitby | Durham Catholic DSB | elementary |
| St Malachy S | Toronto | Toronto Catholic District School Board | elementary |
| St Marcellinus | Mississauga | Dufferin-Peel Catholic DSB | secondary |
| St Marcellus Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Margaret Mary Sep S | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St Margaret Mary Sep S | Woodbridge | York Catholic DSB | elementary |
| St Margaret S | Cambridge | Waterloo Catholic DSB | elementary |
| St Margaret Sep S | Thunder Bay | Thunder Bay Catholic DSB | elementary |
| St Margaret Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Margaret's PS | Scarborough | Toronto DSB | elementary |
| St Marguerite Bourgeoys | Kingston | Algonquin and Lakeshore Catholic DSB | elementary |
| St Marguerite Bourgeoys Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Marguerite Bourgeoys Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Marguerite d'Youville | RICHMOND HILL | York Catholic DSB | elementary |
| St Marguerite d'Youville | Ottawa | Ottawa Catholic District School Board | elementary |
| St Marguerite D'Youville | London | London District Catholic School Board | elementary |
| St Marguerite d'Youville CS | Whitby | Durham Catholic DSB | elementary |
| St Marguerite d'Youville E S | Oakville | Halton Catholic DSB | elementary |
| St Marguerite D'Youville E S | Barrie | Simcoe Muskoka Catholic DSB | elementary |
| St Marguerite d'Youville SS | Brampton | Dufferin-Peel Catholic DSB | secondary |
| St Maria Goretti E S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Maria Goretti Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Mark | Kitchener | Waterloo Catholic DSB | elementary |
| St Mark Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Mark Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Mark Sep S | London | London District Catholic School Board | elementary |
| St Mark Sep S | Stouffville | York Catholic DSB | elementary |
| St Mark the Evangelist Catholic | Whitby | Durham Catholic DSB | elementary |
| St Marks HS | Manotick | Ottawa Catholic District School Board | secondary |
| St Marks Sep S | Burlington | Halton Catholic DSB | elementary |
| St Martha Catholic S | Kingston | Algonquin and Lakeshore Catholic DSB | elementary |
| St Martha S | Toronto | Toronto Catholic District School Board | elementary |
| St Martin Catholic S | Terrace Bay | Superior North Catholic DSB | elementary |
| St Martin de Porres S | Kanata | Ottawa Catholic District School Board | elementary |
| St Martin De Porres Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Martin of Tours Sep S | Stoney Creek | Hamilton-Wentworth Catholic DSB | elementary |
| St Martin Sep S | Thunder Bay | Thunder Bay Catholic DSB | elementary |
| St Martin Sep S | London | London District Catholic School Board | elementary |
| St Martin's Sep S | Mississauga | Dufferin-Peel Catholic DSB | secondary |
| St Martin's Sep S | Whitney | Algonquin and Lakeshore Catholic DSB | elementary |
| St Mary Cath. S | Shannonville | Algonquin and Lakeshore Catholic DSB | elementary |
| St Mary Catholic Academy | Toronto | Toronto Catholic District School Board | secondary |
| St Mary Catholic HS | Pickering | Durham Catholic DSB | secondary |
| St Mary Catholic Learning Center | Brantford | Brant Haldimand Norfolk Catholic DSB | secondary |
| St Mary Catholic S | Nobleton | York Catholic DSB | elementary |
| St Mary Choir Sep S | London | London District Catholic School Board | elementary |
| St Mary French Immersion Sep S | Sault Ste Marie | Huron-Superior Catholic DSB | elementary |
| St Mary Immaculate Sep S | Richmond Hill | York Catholic DSB | elementary |
| St Mary of the Angels Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Mary Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Mary Sep S | Mount Forest | Wellington Catholic DSB | elementary |
| St Mary Sep S | Elora | Wellington Catholic DSB | elementary |
| St Mary Sep S | Massey | Huron-Superior Catholic DSB | elementary |
| St Mary Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Mary Sep S (Gloucester) | GLOUCESTER | Ottawa Catholic District School Board | elementary |
| St Mary's Catholic S | Deep River | Renfrew County Catholic DSB | elementary |
| St Mary's College | Sault Ste Marie | Huron-Superior Catholic DSB | secondary |
| St Mary's HS | Owen Sound | Bruce-Grey Catholic DSB | secondary |
| St Mary's HS | Brockville | Catholic DSB of Eastern Ontario | secondary |
| St Mary's HS | Woodstock | London District Catholic School Board | secondary |
| St Mary's HS | Kitchener | Waterloo Catholic DSB | secondary |
| St Mary's S | Maidstone | Windsor-Essex Catholic DSB | elementary |
| St Mary's Sep S | Listowel | Huron-Perth Catholic DSB | elementary |
| St Mary's Sep S | Carleton Place | Catholic DSB of Eastern Ontario | elementary |
| St Mary's Sep S | Chesterville | Catholic DSB of Eastern Ontario | elementary |
| St Marys DC & VI | St Marys | Avon Maitland DSB | secondary |
| St Marys S | Hagersville | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Marys Sep S | Goderich | Huron-Perth Catholic DSB | elementary |
| St Marys Sep S | Barrie | Simcoe Muskoka Catholic DSB | elementary |
| St Marys Sep S | Blind River | Huron-Superior Catholic DSB | elementary |
| St Marys Sep S | Collingwood | Simcoe Muskoka Catholic DSB | elementary |
| St Marys Sep S | Trenton | Algonquin and Lakeshore Catholic DSB | elementary |
| St Matthew E S | Waterloo | Waterloo Catholic DSB | elementary |
| St Matthew HS | Orleans | Ottawa Catholic District School Board | secondary |
| St Matthew Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Matthew Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Matthew Sep S | Unionville | York Catholic DSB | elementary |
| St Matthew the Evangelist | Whitby | Durham Catholic DSB | elementary |
| St Matthew's S | Oakville | Halton Catholic DSB | elementary |
| St Maurice Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Maximilian Kolbe CHS | Aurora | York Catholic DSB | secondary |
| St Michael (Corkery) | Carp | Ottawa Catholic District School Board | elementary |
| St Michael (Ottawa) S | Ottawa | Ottawa Catholic District School Board | elementary |
| St Michael Catholic S | London | London District Catholic School Board | elementary |
| St Michael Catholic School | Guelph | Wellington Catholic DSB | elementary |
| St Michael Catholic SS | Stratford | Huron-Perth Catholic DSB | secondary |
| St Michael HS | Kemptville | Catholic DSB of Eastern Ontario | secondary |
| St Michael School | Toronto | Toronto Catholic District School Board | elementary |
| St Michael Sep S | Ridgetown | St. Clair Catholic District School Board | elementary |
| St Michael Sep S | Cambridge | Waterloo Catholic DSB | elementary |
| St Michael Sep S | Thornhill | York Catholic DSB | elementary |
| St Michael the Archangel Catholic E S | Barrie | Simcoe Muskoka Catholic DSB | elementary |
| St Michael the Archangel Catholic Elementary School | Vaughan | York Catholic DSB | elementary |
| St Michael's Choir S | Toronto | Toronto Catholic District School Board | secondary |
| St Michael's Choir S | Toronto | Toronto Catholic District School Board | elementary |
| St Michael's S | Bright's Grove | St. Clair Catholic District School Board | elementary |
| St Michael's S | Belleville | Algonquin and Lakeshore Catholic DSB | elementary |
| St Michael's S | Woodstock | London District Catholic School Board | elementary |
| St Michael's Sep S | Douglas | Renfrew County Catholic DSB | elementary |
| St Michaels (Fitzroy Harbour) Sep S | Fitzroy Harbour | Ottawa Catholic District School Board | elementary |
| St Michaels S | SIMCOE | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Michaels S | Dunnville | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Michaels Sep S | Oakville | Halton Catholic DSB | elementary |
| St Monica Catholic S | Buttonville | York Catholic DSB | elementary |
| St Monica Catholic School | Pickering | Durham Catholic DSB | elementary |
| St Monica Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Monica Sep S | Nepean | Ottawa Catholic District School Board | elementary |
| St Monicas Sep S | Barrie | Simcoe Muskoka Catholic DSB | elementary |
| St Mother Teresa Catholic Academy | Toronto | Toronto Catholic District School Board | secondary |
| St Nicholas Adult High School | Ottawa | secondary | |
| St Nicholas Catholic ES | Waterloo | Waterloo Catholic DSB | elementary |
| St Nicholas Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Nicholas Catholic S | Newmarket | York Catholic DSB | elementary |
| St Nicholas Catholic School | London | London District Catholic School Board | elementary |
| St Nicholas of Bari Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Noel Chabanel Catholic Elementary School | Wasaga Beach | Simcoe Muskoka Catholic DSB | elementary |
| St Norbert Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Padre Pio CES | WOODBRIDGE | York Catholic DSB | elementary |
| St Paschal Baylon Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Patrick Cath S | Harrowsmith | Algonquin and Lakeshore Catholic DSB | elementary |
| St Patrick Catholic E S | Rockland | Catholic DSB of Eastern Ontario | elementary |
| St Patrick Catholic S | Erinsville | Algonquin and Lakeshore Catholic DSB | elementary |
| St Patrick Catholic S | Ajax | Durham Catholic DSB | elementary |
| St Patrick Catholic SS | Toronto | Toronto Catholic District School Board | secondary |
| St Patrick English Catholic Se | Nepean | Ottawa Catholic District School Board | elementary |
| St Patrick HS | Thunder Bay | Thunder Bay Catholic DSB | secondary |
| St Patrick Markham Sep S | Markham | York Catholic DSB | elementary |
| St Patrick S | Guelph | Wellington Catholic DSB | elementary |
| St Patrick Schomberg Sep S | Schomberg | York Catholic DSB | elementary |
| St Patrick Sep S | Lucan | London District Catholic School Board | elementary |
| St Patrick Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Patrick's High School | Sarnia | St. Clair Catholic District School Board | secondary |
| St Patrick's HS | Ottawa | Ottawa Catholic District School Board | secondary |
| St Patrick's S | Woodstock | London District Catholic School Board | elementary |
| St Patricks S | Brantford | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Patricks S | Caledonia | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Patricks S | Kapuskasing | Northeastern Catholic DSB | elementary |
| St Patricks Sep S | Sebringville | Huron-Perth Catholic DSB | elementary |
| St Patricks Sep S | Atikokan | Northwest Catholic DSB | elementary |
| St Patricks Sep S | Burlington | Halton Catholic DSB | elementary |
| St Paul Catholic S | Guelph | Wellington Catholic DSB | elementary |
| St Paul Catholic S | Whitby | Durham Catholic DSB | elementary |
| St Paul Catholic SS | Trenton | Algonquin and Lakeshore Catholic DSB | secondary |
| St Paul HS | Ottawa | Ottawa Catholic District School Board | secondary |
| St Paul S | Kingston | Algonquin and Lakeshore Catholic DSB | elementary |
| St Paul School | Thunder Bay | Thunder Bay Catholic DSB | elementary |
| St Paul Sep S | Kitchener | Waterloo Catholic DSB | elementary |
| St Paul Sep S | London | London District Catholic School Board | elementary |
| St Paul Sep S | Stoney Creek | Hamilton-Wentworth Catholic DSB | elementary |
| St Paul Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Paul Sep S | Newmarket | York Catholic DSB | elementary |
| St Paul SS | Mississauga | Dufferin-Peel Catholic DSB | secondary |
| St Paul the Apostle Sep S | Coniston | Sudbury Catholic DSB | elementary |
| St Paul's Sep S | Alliston | Simcoe Muskoka Catholic DSB | elementary |
| St Paul's Sep S | Burlington | Halton Catholic DSB | elementary |
| St Peter | Brantford | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Peter Canisius Sep S | Watford | St. Clair Catholic District School Board | elementary |
| St Peter Catholic HS | Orleans | Ottawa Catholic District School Board | secondary |
| St Peter Catholic S | Cambridge | Waterloo Catholic DSB | elementary |
| St Peter Catholic Sep S | Tecumseh | Windsor-Essex Catholic DSB | elementary |
| St Peter Catholic Sep S | Woodbridge | York Catholic DSB | elementary |
| St Peter Sep S | Orangeville | Dufferin-Peel Catholic DSB | elementary |
| St Peter Sep S | Guelph | Wellington Catholic DSB | elementary |
| St Peter's & St Paul's Sep S | Durham | Bruce-Grey Catholic DSB | elementary |
| St Peter's S | Parry Sound | Simcoe Muskoka Catholic DSB | elementary |
| St Peter's S | Cornwall | Catholic DSB of Eastern Ontario | elementary |
| St Peter's S | Trenton | Algonquin and Lakeshore Catholic DSB | elementary |
| St Peter's SS | Barrie | Simcoe Muskoka Catholic DSB | secondary |
| St Peters Sep S | Milton | Halton Catholic DSB | elementary |
| St Philip E S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Philip Sep S | Richmond | Ottawa Catholic District School Board | elementary |
| St Philip's S | Petrolia | St. Clair Catholic District School Board | elementary |
| St Pius S | Brantford | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Pius X Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Pius X Sep S | London | London District Catholic School Board | elementary |
| St Pius X Sep S | Ottawa | Ottawa Catholic District School Board | secondary |
| St Pius X Sep S | Thunder Bay | Thunder Bay Catholic DSB | elementary |
| St Pius X Sep S | Tecumseh | Windsor-Essex Catholic DSB | elementary |
| St Raphael Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Raphael Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Raphaels Sep S | Burlington | Halton Catholic DSB | elementary |
| St Raymond ES | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St René Goupil - St Luke Sep S | Thornhill | York Catholic DSB | elementary |
| St Rene Goupil Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Richard Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Richard Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Rita Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Rita Catholic S | Nepean | Ottawa Catholic District School Board | elementary |
| St Robert Catholic HS | Thornhill | York Catholic DSB | secondary |
| St Robert Sep S | NORTH YORK | Toronto Catholic District School Board | elementary |
| St Roch | Toronto | Toronto Catholic District School Board | elementary |
| St Roch Catholic SS | Brampton | Dufferin-Peel Catholic DSB | secondary |
| St Rose of Lima Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Rose of Lima Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Rose Sep S | Windsor | Windsor-Essex Catholic DSB | elementary |
| St Sebastian Elementary School | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Sebastian Sep S | London | London District Catholic School Board | elementary |
| St Sebastian Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Simon Sep S | North York | Toronto Catholic District School Board | elementary |
| St Simon Stock Elementary School | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Sofia Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Stephen | Stittsville | Ottawa Catholic District School Board | elementary |
| St Stephen | Woodbridge | York Catholic DSB | elementary |
| St Stephen Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Stephen Sep S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Stephens S | Cayuga | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Sylvester Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Teresa of Avila Sep S | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St Teresa of Avila Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Teresa of Avila Sep S | Elmira | Waterloo Catholic DSB | elementary |
| St Teresa of Calcutta Catholic Elementary School | Windsor | Windsor-Essex Catholic DSB | elementary |
| St Teresa Sep S | Kitchener | Waterloo Catholic DSB | elementary |
| St Theresa Catholic S | Callander | Nipissing-Parry Sound Catholic DSB | elementary |
| St Theresa Catholic S | Whitby | Durham Catholic DSB | elementary |
| St Theresa Catholic Sep S | London | London District Catholic School Board | elementary |
| St Theresa of Lisieux CHS | Richmond Hill | York Catholic DSB | secondary |
| St Theresa S | Cumberland | Ottawa Catholic District School Board | elementary |
| St Theresa Sep S | Brantford | Brant Haldimand Norfolk Catholic DSB | elementary |
| St Theresa Shrine Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Theresa SS | Belleville | Algonquin and Lakeshore Catholic DSB | secondary |
| St Theresas Sep S | Midland | Simcoe Muskoka Catholic DSB | secondary |
| St Thérèse of Lisieux Catholic ES | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St Therese of the Child Jesus | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Thomas Aquinas Catholic S | Oshawa | Durham Catholic DSB | elementary |
| St Thomas Aquinas Catholic SS | Tottenham | Simcoe Muskoka Catholic DSB | secondary |
| St Thomas Aquinas Roman Catholic SS | Oakville | Halton Catholic DSB | secondary |
| St Thomas Aquinas Secondary School | Russell | Catholic DSB of Eastern Ontario | secondary |
| St Thomas Aquinas Sep S | Brampton | Dufferin-Peel Catholic DSB | secondary |
| St Thomas Aquinas Sep S | Thunder Bay | Thunder Bay Catholic DSB | elementary |
| St Thomas Aquinas Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Thomas Aquinas Sep S | Keswick | York Catholic DSB | elementary |
| St Thomas Aquinas SS | London | London District Catholic School Board | secondary |
| St Thomas More | Kingston | Algonquin and Lakeshore Catholic DSB | elementary |
| St Thomas More Catholic SS | Hamilton | Hamilton-Wentworth Catholic DSB | secondary |
| St Thomas More S | Ottawa | Ottawa Catholic District School Board | elementary |
| St Thomas More Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Thomas More Sep S | London | London District Catholic School Board | elementary |
| St Thomas More Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Thomas of Villanova SS | LaSalle | Windsor-Essex Catholic DSB | secondary |
| St Thomas the Apostle Sep S | Renfrew | Renfrew County Catholic DSB | elementary |
| St Timothy Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Timothy Sep S | Kitchener | Waterloo Catholic DSB | elementary |
| St Timothy Sep S | Burlington | Halton Catholic DSB | elementary |
| St Timothy Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Ursula Elementary School | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St Ursula Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St Valentine ES | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Veronica | Woodbridge | York Catholic DSB | elementary |
| St Victor Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Victor Sep S | Mattawa | Nipissing-Parry Sound Catholic DSB | elementary |
| St Vincent de Paul | Cambridge | Waterloo Catholic DSB | elementary |
| St Vincent de Paul Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St Vincent de Paul Sep S | Strathroy | London District Catholic School Board | elementary |
| St Vincent de Paul Sep S | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St Vincent de Paul Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St Vincent Sep S | Thunder Bay | Thunder Bay Catholic DSB | elementary |
| St Vincent Sep S | Oakville | Halton Catholic DSB | elementary |
| St Wilfrid Catholic S | Pickering | Durham Catholic DSB | elementary |
| St Wilfrid Sep S | Toronto | Toronto Catholic District School Board | elementary |
| St William Sep S | Emeryville | Windsor-Essex Catholic DSB | elementary |
| St. Aidan Catholic ES | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. Albert of Jerusalem | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St. Alexander Catholic Elementary School | Fonthill | Niagara Catholic DSB | elementary |
| St. Alfred Catholic Elementary School | St Catharines | Niagara Catholic DSB | elementary |
| St. Aloysius Gonzaga Secondary School | Mississauga | Dufferin-Peel Catholic DSB | secondary |
| St. Alphonsa Catholic Elementary School | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. Alphonsus Catholic Elementary School | Peterborough | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. André Bessette Catholic | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. Andre Bessette Catholic School | INNISFIL | Simcoe Muskoka Catholic DSB | elementary |
| St. Andre Catholic School | Toronto | Toronto Catholic District School Board | elementary |
| St. Andre French Immersion CES | Tecumseh | Windsor-Essex Catholic DSB | elementary |
| St. Andrew Catholic Elementary School | Welland | Niagara Catholic DSB | elementary |
| St. Andrew Catholic S. | Oakville | Halton Catholic DSB | elementary |
| St. Angela Merici Catholic School | Bradford | Simcoe Muskoka Catholic DSB | elementary |
| St. Angela Merici Catholic School | Chatham | St. Clair Catholic District School Board | elementary |
| St. Ann Catholic Elementary School | St Catharines | Niagara Catholic DSB | elementary |
| St. Ann Catholic Elementary School | Fenwick | Niagara Catholic DSB | elementary |
| St. Ann Catholic ES | Ancaster | Hamilton-Wentworth Catholic DSB | elementary |
| St. Ann Catholic ES | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St. Anne Catholic Elementary School | Peterborough | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Anne Catholic Elementary School | Burlington | Halton Catholic DSB | elementary |
| St. Anne Catholic Elementary School | Oshawa | Durham Catholic DSB | elementary |
| St. Anne Catholic School | London | London District Catholic School Board | elementary |
| St. Anne’s Catholic Academy Jr. | — | Toronto Catholic District School Board | elementary |
| St. Anne’s Catholic Academy Sr. | — | Toronto Catholic District School Board | secondary |
| St. Anne's St. Thomas | St. Thomas | London District Catholic School Board | elementary |
| St. Anthony Catholic Elementary School | St Catharines | Niagara Catholic DSB | elementary |
| St. Anthony Catholic Elementary School | Port Hope | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Anthony Daniel Catholic ES | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St. Augustine Catholic Elementary School | Welland | Niagara Catholic DSB | elementary |
| St. Augustine French Immersion | Wawa | Huron-Superior Catholic DSB | elementary |
| St. Basil Catholic Elementary School | Brantford | Brant Haldimand Norfolk Catholic DSB | elementary |
| St. Basil Catholic School | Sault Ste. Marie | Huron-Superior Catholic DSB | elementary |
| St. Benedict | NEPEAN | Ottawa Catholic District School Board | elementary |
| St. Benedict Elementary School | Milton | Halton Catholic DSB | elementary |
| St. Bernadette | Stittsville | Ottawa Catholic District School Board | elementary |
| St. Bernard of Clairvaux Cath Elem S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St. Bernard Sep S | Ottawa | Ottawa Catholic District School Board | elementary |
| St. Bonaventure Catholic ES | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. Bridget Catholic School | Brooklin | Durham Catholic DSB | elementary |
| St. Brigid Sep S. | Ayr | Waterloo Catholic DSB | elementary |
| St. Brother Andre Catholic School | Gloucester | Ottawa Catholic District School Board | elementary |
| St. Catherine Catholic Elementary School | Peterborough | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Cecilia | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. Cecilia Catholic Elementary School | Maple | York Catholic DSB | elementary |
| St. Cecilia Catholic School | Alliston | Simcoe Muskoka Catholic DSB | elementary |
| St. Cecilia School | Nepean | Ottawa Catholic District School Board | elementary |
| St. Christopher Catholic Elementary School | St Catharines | Niagara Catholic DSB | elementary |
| St. Daniel Comboni Catholic Elementary School | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. David Catholic ES | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St. Denis Catholic Elementary School | St Catharines | Niagara Catholic DSB | elementary |
| St. Dominic | Cumberland | Ottawa Catholic District School Board | elementary |
| St. Dominic Catholic Elementary School | Lindsay | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Dominic Savio | Kitchener | Waterloo Catholic DSB | elementary |
| St. Dominic Savio Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| St. Edmund Campion Secondary School | Brampton | Dufferin-Peel Catholic DSB | secondary |
| St. Edward Catholic Elementary School | Jordan | Niagara Catholic DSB | elementary |
| St. Elizabeth Catholic Elementary School | Bowmanville | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Elizabeth Catholic Elementary School | Wainfleet | Niagara Catholic DSB | elementary |
| St. Evan Catholic Elementary School | Caledon | Dufferin-Peel Catholic DSB | elementary |
| St. Francis of Assisi Catholic Elementary School | Newcastle | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Francis of Assisi Catholic School | Kingston | Algonquin and Lakeshore Catholic DSB | elementary |
| St. Francis Xavier Catholic ES | Stoney Creek | Hamilton-Wentworth Catholic DSB | elementary |
| St. Francis Xavier Catholic Secondary School | Milton | Halton Catholic DSB | secondary |
| St. Francis Xavier High School | Gloucester | Ottawa Catholic District School Board | secondary |
| St. Francis Xavier Sep S | Brockville | Catholic DSB of Eastern Ontario | elementary |
| St. Gabriel | Kanata | Ottawa Catholic District School Board | elementary |
| St. Gabriel Catholic Elementary School | Brantford | Brant Haldimand Norfolk Catholic DSB | elementary |
| St. Gabriel Catholic Elementary School | Stoney Creek | Hamilton-Wentworth Catholic DSB | elementary |
| St. Gabriel Catholic Elementary School | Cambridge | Waterloo Catholic DSB | elementary |
| St. Gabriel Catholic School | London | London District Catholic School Board | elementary |
| St. Gabriel Lalemant Catholic Elementary School | Niagara Falls | Niagara Catholic DSB | elementary |
| St. Gabriel Sep S | Burlington | Halton Catholic DSB | elementary |
| St. Geneviève Catholic School | Kingston | Algonquin and Lakeshore Catholic DSB | elementary |
| St. George Catholic Elementary School | Crystal Beach | Niagara Catholic DSB | elementary |
| St. Gianna School | Gloucester | Ottawa Catholic District School Board | elementary |
| St. Giovanni Battista Scalabrini Catholic Elementary School | Thornhill | York Catholic DSB | elementary |
| St. Giovanni Scalabrini Catholic Elementary School | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St. Gregory Catholic School | Carleton Place | Catholic DSB of Eastern Ontario | elementary |
| St. Gregory the Great Elementary School | Oakville | Halton Catholic DSB | elementary |
| St. Herbert School | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St. Ignatius Catholic School | Guelph | Wellington Catholic DSB | elementary |
| St. Isabel Catholic Elementary School | Kanata | Ottawa Catholic District School Board | elementary |
| St. Jacinta Marto Catholic Elementary School | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. James Catholic Education Centre | Smiths Falls | Catholic DSB of Eastern Ontario | secondary |
| St. James Catholic Elementary School | St Catharines | Niagara Catholic DSB | elementary |
| St. James Catholic Global Learning Centre | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St. Jean-Marie Vianney Catholic | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. Jerome CES | Aurora | York Catholic DSB | elementary |
| St. Joan of Arc Catholic Academy | Toronto | Toronto Catholic District School Board | secondary |
| St. Joan of Arc Catholic HS | Barrie | Simcoe Muskoka Catholic DSB | secondary |
| St. Joan of Arc Catholic SS | Mississauga | Dufferin-Peel Catholic DSB | secondary |
| St. John Bosco Catholic Elementary School | Port Colborne | Niagara Catholic DSB | elementary |
| St. John Catholic Elementary School | Beamsville | Niagara Catholic DSB | elementary |
| St. John Catholic Elementary School Peterborough | Peterborough | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. John Catholic Sep S | Kitchener | Waterloo Catholic DSB | elementary |
| St. John Henry Newman | SCARBOROUGH | Toronto Catholic District School Board | secondary |
| St. John Henry Newman Catholic Elementary School | Niagara Falls | Niagara Catholic DSB | elementary |
| St. John Henry Newman Catholic Elementary School | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. John Henry Newman Catholic Secondary School | Stoney Creek | Hamilton-Wentworth Catholic DSB | secondary |
| St. John Paul II | Gloucester | Ottawa Catholic District School Board | elementary |
| St. John Paul II | Bolton | Dufferin-Peel Catholic DSB | elementary |
| St. John Paul II | Hammond | Catholic DSB of Eastern Ontario | elementary |
| St. John Paul II | Toronto | Toronto Catholic District School Board | secondary |
| St. John Paul II Catholic Elementary School | Lindsay | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. John Paul II Catholic ES | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St. John Paul II Catholic School | Brooklin | Durham Catholic DSB | elementary |
| St. John Paul II School | Kenora | Kenora Catholic DSB | elementary |
| St. John School | Red Lake | Kenora Catholic DSB | elementary |
| St. John The Baptist | Bolton | Dufferin-Peel Catholic DSB | elementary |
| St. John XXIII | Toronto | Toronto Catholic District School Board | elementary |
| St. John XXIII | Nepean | Ottawa Catholic District School Board | elementary |
| St. John XXIII Catholic Elementary School | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St. John XXIII Catholic School | Oshawa | Durham Catholic DSB | elementary |
| St. John XXIII Sep S | Arnprior | Renfrew County Catholic DSB | elementary |
| St. Joseph Brampton | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. Joseph Catholic Elementary School | Grimsby | Niagara Catholic DSB | elementary |
| St. Joseph Catholic Elementary School | Stevensville | Niagara Catholic DSB | elementary |
| St. Joseph Catholic Elementary School Cobourg | Cobourg | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Joseph Catholic Elementary School Douro | Douro | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Joseph Catholic ES | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St. Joseph Catholic French Immersion Centre Bowmanville | Bowmanville | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Joseph's Catholic High School | Barrie | Simcoe Muskoka Catholic DSB | secondary |
| St. Josephine Bakhita | Milton | Halton Catholic DSB | elementary |
| St. Josephine Bakhita | Ajax | Durham Catholic DSB | elementary |
| St. Josephine Bakhita CES | Kitchener | Waterloo Catholic DSB | elementary |
| St. Josephine Virtual High School | — | Ottawa Catholic District School Board | secondary |
| St. Juan Diego | Nepean | Ottawa Catholic District School Board | elementary |
| St. Kateri Catholic Elementary School | London | London District Catholic School Board | elementary |
| St. Kateri Tekakwitha | Toronto | Toronto Catholic District School Board | elementary |
| St. Kateri Tekakwitha | Kitchener | Waterloo Catholic DSB | elementary |
| St. Kateri Tekakwitha | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St. Kateri Tekakwitha Catholic Elementary School | Thorold | Niagara Catholic DSB | elementary |
| St. Kateri Tekakwitha Catholic School | Orleans | Ottawa Catholic District School Board | elementary |
| St. Kateri Tekakwitha Catholic School | Oshawa | Durham Catholic DSB | elementary |
| St. Katharine Drexel Catholic Secondary School | — | York Catholic DSB | secondary |
| St. Lawrence Catholic ES | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St. Lawrence Intermediate School | Cornwall | Upper Canada DSB | secondary |
| St. Lucy Cath Elem S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. Luke Catholic Elementary School | Lindsay | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Luke Catholic HS | Smiths Falls | Catholic DSB of Eastern Ontario | secondary |
| St. Luke Catholic S | Nepean | Ottawa Catholic District School Board | elementary |
| St. Luke Elementary School | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St. Marguerite d’Youville Catholic ES | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St. Mark Catholic Elementary School | Beamsville | Niagara Catholic DSB | elementary |
| St. Mark Catholic ES | Stoney Creek | Hamilton-Wentworth Catholic DSB | elementary |
| St. Mark Sep S | Prescott | Catholic DSB of Eastern Ontario | elementary |
| St. Martin Catholic Elementary School | Ennismore | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Martin Catholic Elementary School | Smithville | Niagara Catholic DSB | elementary |
| St. Mary - St. Cecilia | Morrisburg | Catholic DSB of Eastern Ontario | elementary |
| St. Mary Catholic Elementary School | Niagara Falls | Niagara Catholic DSB | elementary |
| St. Mary Catholic Elementary School | Welland | Niagara Catholic DSB | elementary |
| St. Mary Catholic Elementary School Campbellford | Campbellford | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Mary Catholic Elementary School Grafton | Grafton | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Mary Catholic Elementary School Lindsay | Lindsay | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Mary Catholic Secondary School | Cobourg | Peterborough Victoria Northumberland and Clarington CDSB | secondary |
| St. Mary Elementary School | Oakville | Halton Catholic DSB | elementary |
| St. Mary of the Angels Catholic Elementary School | Woodbridge | York Catholic DSB | elementary |
| St. Mary’s Catholic SS | Hamilton | Hamilton-Wentworth Catholic DSB | secondary |
| St. Mary's Sep S | West Lorne | London District Catholic School Board | elementary |
| St. Matthew Catholic ES | Binbrook | Hamilton-Wentworth Catholic DSB | elementary |
| St. Matthew Catholic School | Sarnia | St. Clair Catholic District School Board | elementary |
| St. Matthew Catholic Secondary School | Cornwall | Catholic DSB of Eastern Ontario | secondary |
| St. Michael Catholic Elementary School | Cobourg | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Michael Catholic Elementary School | Niagara-on-the-Lake | Niagara Catholic DSB | elementary |
| St. Michael Catholic ES | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St. Michael Catholic Secondary School | Bolton | Dufferin-Peel Catholic DSB | secondary |
| St. Monica Elementary S | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. Mother Teresa | Nepean | Ottawa Catholic District School Board | secondary |
| St. Mother Teresa Catholic Elementary School | Courtice | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Mother Teresa Catholic S | Russell | Catholic DSB of Eastern Ontario | elementary |
| St. Nicholas Catholic Elementary School | St Catharines | Niagara Catholic DSB | elementary |
| St. Nicholas Elementary School | Bolton | Dufferin-Peel Catholic DSB | elementary |
| St. Nicholas S | Barrie | Simcoe Muskoka Catholic DSB | elementary |
| St. Nicholas Sep S | Oakville | Halton Catholic DSB | elementary |
| St. Oscar Romero | Toronto | Toronto Catholic District School Board | secondary |
| St. Oscar Romero Catholic Elementary School | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St. Oscar Romero Catholic SS | Mississauga | Dufferin-Peel Catholic DSB | secondary |
| St. Patrick Catholic Elementary School | Niagara Falls | Niagara Catholic DSB | elementary |
| St. Patrick Catholic Elementary School | Port Colborne | Niagara Catholic DSB | elementary |
| St. Patrick Catholic Elementary School | Peterborough | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Patrick Catholic ES | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St. Paul Catholic Elementary School Lakefield | Lakefield | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Paul Catholic Elementary School Norwood | Norwood | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Paul Catholic Elementary School Peterborough | Peterborough | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Paul Catholic S | Sault Ste Marie | Huron-Superior Catholic DSB | elementary |
| St. Paul School (Care and Treatment) | — | Huron-Superior Catholic DSB | elementary |
| St. Paul VI | Toronto | Toronto Catholic District School Board | elementary |
| St. Peter Catholic Elementary School | St Catharines | Niagara Catholic DSB | elementary |
| St. Peter Catholic Secondary School | Peterborough | Peterborough Victoria Northumberland and Clarington CDSB | secondary |
| St. Philomena Catholic Elementary School | Fort Erie | Niagara Catholic DSB | elementary |
| St. Pio of Pietrelcina Elementary School | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| St. Raphael the Archangel Catholic Elementary School | Maple | York Catholic DSB | elementary |
| St. Rita Elementary School | Brampton | Dufferin-Peel Catholic DSB | elementary |
| St. Rose of Lima Catholic School | Nepean | Ottawa Catholic District School Board | elementary |
| St. Rose of Lima Catholic School | London | London District Catholic School Board | elementary |
| St. Scholastica Elementary School | Town of Milton | Halton Catholic DSB | elementary |
| St. Stephen Catholic Secondary School | Bowmanville | Peterborough Victoria Northumberland and Clarington CDSB | secondary |
| St. Teresa Catholic Elementary School | Peterborough | Peterborough Victoria Northumberland and Clarington CDSB | elementary |
| St. Teresa of Calcutta Catholic Elementary School | St. Catharines | Niagara Catholic DSB | elementary |
| St. Teresa of Calcutta Catholic Elementary School | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| St. Teresa of Calcutta Catholic Elementary School | Cambridge | Waterloo Catholic DSB | elementary |
| St. Teresa of Calcutta Catholic School | Chatham | St. Clair Catholic District School Board | elementary |
| St. Teresa of Calcutta Catholic School | Ajax | Durham Catholic DSB | elementary |
| St. Teresa of Calcutta Catholic School | Bradford | Simcoe Muskoka Catholic DSB | elementary |
| St. Theresa Catholic Elementary School | St Catharines | Niagara Catholic DSB | elementary |
| St. Thérèse Catholic Elementary School | Port Colborne | Niagara Catholic DSB | elementary |
| St. Thomas Aquinas Catholic Secondary School | Lindsay | Peterborough Victoria Northumberland and Clarington CDSB | secondary |
| St. Thomas Aquinas High School | Kenora | Kenora Catholic DSB | secondary |
| St. Thomas the Apostle Catholic ES | Waterdown | Hamilton-Wentworth Catholic DSB | elementary |
| St. Veronica | Milton | Halton Catholic DSB | elementary |
| St. Veronica School | Gloucester | Ottawa Catholic District School Board | elementary |
| St. Vincent de Paul Catholic Elementary School | Niagara Falls | Niagara Catholic DSB | elementary |
| St.Bernadette Sep S | Kitchener | Waterloo Catholic DSB | elementary |
| St.Gemma | Ottawa | Ottawa Catholic District School Board | elementary |
| St.John Paul II Catholic Elementary School | Richmond Hill | York Catholic DSB | elementary |
| St.John XXIII Catholic Elementary School | Unionville | York Catholic DSB | elementary |
| St.Mary Separate School | Fort Frances | Northwest Catholic DSB | elementary |
| St.Teresa of Calcutta Catholic School | Walkerton | Bruce-Grey Catholic DSB | elementary |
| St.Veronica Elementary School | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| Stamford Collegiate | Niagara Falls | DSB of Niagara | secondary |
| Stanley Mills Public School | BRAMPTON | Peel District School Board | elementary |
| Stanley PS | North York | Toronto DSB | elementary |
| Stayner CI | Stayner | Simcoe County DSB | secondary |
| Steele Street PS | Barrie | Simcoe County DSB | elementary |
| Steele Street PS | Port Colborne | DSB of Niagara | elementary |
| Steelesview PS | North York | Toronto DSB | elementary |
| Stella Maris Sep S | Amherstburg | Windsor-Essex Catholic DSB | elementary |
| Stella Maris Sep S | Toronto | Toronto Catholic District School Board | elementary |
| Stephen Central PS | Dashwood | Avon Maitland DSB | elementary |
| Stephen G Saywell PS | Oshawa | Durham DSB | elementary |
| Stephen Leacock CI | Toronto | Toronto DSB | secondary |
| Stephen Leacock PS | Kanata | Ottawa-Carleton DSB | elementary |
| Stephen Lewis SS | Thornhill | York Region DSB | secondary |
| Stephen Lewis SS | Mississauga | Peel District School Board | secondary |
| Steve MacLean PS | Gloucester | Ottawa-Carleton DSB | elementary |
| Stevensville PS | Stevensville | DSB of Niagara | elementary |
| Stewart Avenue Sr PS | Cambridge | Waterloo Region DSB | elementary |
| Stewarttown S | Georgetown | Halton DSB | elementary |
| Stilecroft PS | North York | Toronto DSB | elementary |
| Stirling Public School | Stirling | Hastings and Prince Edward DSB | elementary |
| Stittsville PS | Stittsville | Ottawa-Carleton DSB | elementary |
| Stockdale PS | Frankford | Kawartha Pine Ridge DSB | elementary |
| Stonebridge PS | Markham | York Region DSB | elementary |
| Stonecrest E S | Woodlawn | Ottawa-Carleton DSB | elementary |
| Stonehaven E S | Newmarket | York Region DSB | elementary |
| Stoney Creek P.S. | London | Thames Valley District School Board | elementary |
| Stoneybrook PS | London | Thames Valley District School Board | elementary |
| Stornoway Crescent PS | Thornhill | York Region DSB | elementary |
| Storrington PS | Battersea | Limestone DSB | elementary |
| Stouffville District SS | Stouffville | York Region DSB | secondary |
| Straffordville-Eden PS | Straffordville | Thames Valley District School Board | elementary |
| Stratford District Secondary School | Stratford | Avon Maitland DSB | secondary |
| Strathcona Jr PS | Hamilton | Hamilton-Wentworth DSB | elementary |
| Strathroy District CI | Strathroy | Thames Valley District School Board | secondary |
| Streetsville SS | Mississauga | Peel District School Board | secondary |
| Sts Cosmas and Damian Catholic S | Toronto | Toronto Catholic District School Board | elementary |
| Sts Martha and Mary Sep S | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| Sts Peter & Paul Sep S | Hamilton | Hamilton-Wentworth Catholic DSB | elementary |
| Sts. Peter and Paul | Mississauga | Dufferin-Peel Catholic DSB | elementary |
| Stuart Baker Elementary | Haliburton | Trillium Lakelands DSB | elementary |
| Stuart Scott PS | Newmarket | York Region DSB | elementary |
| Sturgeon Creek S | Barwick | Rainy River DSB | elementary |
| Subway Academy I | Toronto | secondary | |
| Sudbury SS | Sudbury | Rainbow District School Board | secondary |
| Suddaby PS | Kitchener | Waterloo Region DSB | elementary |
| Sullivan Community S | Chatsworth | Bluewater DSB | elementary |
| Summers' Corners PS | Aylmer | Thames Valley District School Board | elementary |
| Summerside Public School | Ottawa | Ottawa-Carleton DSB | elementary |
| Summerside Public School | London | Thames Valley District School Board | elementary |
| Summit Heights PS | North York | Toronto DSB | elementary |
| Summitview PS | Stouffville | York Region DSB | elementary |
| Sunderland PS | SUNDERLAND | Durham DSB | elementary |
| Sundridge Centennial PS | Sundridge | Near North DSB | elementary |
| Sunningdale PS | Oakville | Halton DSB | elementary |
| Sunny View Middle School | Brampton | Peel District School Board | elementary |
| Sunnybrae PS | Stroud | Simcoe County DSB | elementary |
| Sunnylea Jr S | Etobicoke | Toronto DSB | elementary |
| Sunset Heights PS | Oshawa | Durham DSB | elementary |
| Sunset Park PS | North Bay | Near North DSB | elementary |
| Superior Collegiate and Vocational Institute | Thunder Bay | Lakehead DSB | secondary |
| Superior Heights CVS | Sault Ste. Marie | Algoma DSB | secondary |
| Susanna Moodie E S | Belleville | Hastings and Prince Edward DSB | elementary |
| Sutton DHS | Sutton | York Region DSB | secondary |
| Sutton PS | Sutton West | York Region DSB | elementary |
| Swansea PS | Toronto | Toronto DSB | elementary |
| Sweet's Corners E S | Lyndhurst | Upper Canada DSB | elementary |
| Swift Waters Elementary School | Brockville | Upper Canada DSB | elementary |
| Sydenham HS | Sydenham | Limestone DSB | secondary |
| Sydenham PS | Kingston | Limestone DSB | elementary |