List of secondary schools in Ontario

English public • Central Algoma Secondary School, Desbarats • Chapleau High School, Chapleau • Elliot Lake Secondary School, Elliot Lake • Hornepayne High School, Hornepayne • Korah Collegiate & Vocational School, Sault Ste. Marie • Michipicoten High School, Wawa • Superior Heights Collegiate and Vocational School, Sault Ste. Marie • W. C. Eaket Secondary School, Blind River • White Pines Collegiate & Vocational School, Sault Ste. Marie French public • École secondaire l'Orée des Bois, Dubreuilville • Villa Française des Jeunes, Elliot Lake English Catholic • Holy Angels Learning Centre, Sault Ste. Marie • St. Mary's College, Sault Ste. Marie French Catholic • École secondaire catholique Jeunesse-Nord, Blind River • École secondaire Notre-Dame-du-Sault, Sault Ste. Marie • École secondaire Saint-Joseph, Wawa ==Brant County==

English public • Brantford Collegiate Institute and Vocational School, Brantford • North Park Collegiate and Vocational School, Brantford • Paris District High School, Paris • Pauline Johnson Collegiate & Vocational School, Brantford • Tollgate Technological Skills Centre, Brantford English Catholic • Assumption College School, Brantford • St. John's College, Brantford ==Bruce County==

English public • Bruce Peninsula District School, Lion's Head • Kincardine & District Secondary School, Kincardine • Peninsula Shores District School, Wiarton • Saugeen District Secondary School, Port Elgin • Walkerton District Community School, Walkerton English Catholic • Sacred Heart High School, Walkerton ==Municipality of Chatham-Kent==

English public • Blenheim District High School, Blenheim • Chatham-Kent Secondary School, Chatham • John McGregor Secondary School, Chatham • Lambton-Kent Composite School, Dresden • Ridgetown District High School, Ridgetown • Tilbury District High School, Tilbury • Wallaceburg District Secondary School, Wallaceburg English Catholic • Ursuline College, Chatham French Catholic • École secondaire catholique de Pain Court, Pain Court ==Cochrane District==

English public • École Secondaire Cochrane High School, Cochrane • Hearst High School, Hearst • Iroquois Falls Secondary School, Iroquois Falls • Kapuskasing District High School, Kapuskasing • Roland Michener Secondary School, South Porcupine • Timmins High and Vocational School, Timmins • Northern Lights Secondary School, Moosonee French public • École secondaire l'Alliance, Iroquois Falls • École Publique Renaissance, Timmins English Catholic • O'Gorman High School, Timmins French Catholic • École catholique Georges-Vanier, Smooth Rock Falls • École catholique Nouveau-Regard, Cochrane • École secondaire catholique l'Alliance, Iroquois Falls • École secondaire catholique Cité des Jeunes, Kapuskasing • École secondaire catholique de Hearst, Hearst • École secondaire catholique Thériault, Timmins • La Clef, Timmins Private • Delores D. Echum Composite School, Moose Factory ==Dufferin County==

English public • Centre Dufferin District High School, Shelburne • Orangeville District Secondary School, Orangeville • Westside Secondary School, Orangeville ==Regional Municipality of Durham==

English public • Ajax High School, Ajax • Anderson Collegiate Vocational Institute, Whitby • Bowmanville High School, Bowmanville • Brock High School, Cannington • Clarington Central Secondary School, Bowmanville • Clarke High School, Newcastle • Courtice Secondary School, Courtice • Donald A. Wilson Secondary School, Whitby • Dunbarton High School, Pickering • Durham Alternative Secondary School, Oshawa • Eastdale Collegiate and Vocational Institute, Oshawa • G. L. Roberts Collegiate and Vocational Institute, Oshawa • Henry Street High School, Whitby • J. Clarke Richardson Collegiate, Ajax • Maxwell Heights Secondary School, Oshawa • O'Neill Collegiate and Vocational Institute, Oshawa • Pickering High School, Ajax • Pine Ridge Secondary School, Pickering • Port Perry High School, Port Perry • R. S. McLaughlin Collegiate and Vocational Institute, Oshawa • Sinclair Secondary School, Whitby • Uxbridge Secondary School, Uxbridge English Catholic • All Saints Catholic Secondary School, Whitby • Archbishop Denis O'Connor Catholic High School, Ajax • Father Leo J. Austin Catholic Secondary School, Whitby • Holy Trinity Secondary School, Courtice • Monsignor John Pereyma Catholic Secondary School, Oshawa • Monsignor Paul Dwyer Catholic High School, Oshawa • Notre Dame Catholic Secondary School, Ajax • St. Mary Catholic Secondary School, Pickering • St. Stephen's Secondary School, Bowmanville French Catholic • École secondaire catholique Saint-Charles-Garnier, Whitby French public • École secondaire Ronald-Marion, Pickering Private • Trafalgar Castle School, Whitby • Kingsway College, Oshawa ==Elgin County==

English public • Arthur Voaden Secondary School, St. Thomas • Central Elgin Collegiate Institute, St. Thomas • East Elgin Secondary School, Aylmer • Parkside Collegiate Institute, St. Thomas • West Elgin Secondary School, West Lorne English Catholic • St. Joseph's Catholic High School, St. Thomas ==Essex County and Windsor==

English public • Belle River District High School, Belle River • Essex District High School, Essex • Kennedy Collegiate Institute, Windsor • Kingsville District High School, Kingsville • Leamington District Secondary School, Leamington • North Star High School, Amherstburg • Riverside Secondary School, Windsor • Sandwich Secondary School, LaSalle • Tecumseh Vista Academy Secondary School, Tecumseh • Vincent Massey Secondary School, Windsor • W. F. Herman Academy Secondary School, Windsor • Walkerville Collegiate Institute, Windsor • Westview Freedom Academy (formerly named Century Secondary School), Windsor French public • École secondaire de Lamothe-Cadillac (formerly named École secondaire Michel-Gratton), Windsor English Catholic • Assumption College School, Windsor • Cardinal Carter Catholic High School, Leamington • Catholic Central High School, Windsor • F. J. Brennan Catholic High School, Windsor • Holy Names High School, Windsor • St. Anne Catholic High School, Lakeshore • St. Joseph's Catholic High School, Windsor • St. Michael's Alternative High School, Essex and Windsor • St. Thomas of Villanova Catholic Secondary School, LaSalle French Catholic • École secondaire catholique E. J. Lajeunesse, Windsor • École secondaire catholique l'Essor, Tecumseh ==Frontenac County==

English public • Bayridge Secondary School, Kingston • Frontenac Secondary School, Kingston • Kingston Secondary School, Kingston • Loyalist Collegiate and Vocational Institute, Kingston • Limestone School of Community Education, Kingston • Granite Ridge Education Centre, Sharbot Lake • Sydenham High School, Sydenham French public • École secondaire publique Mille-Îles, Kingston English Catholic • Holy Cross Catholic Secondary School, Kingston • Regiopolis-Notre Dame Catholic Secondary School, Kingston French Catholic • École secondaire catholique Marie-Rivier, Kingston ==Grey County==

English public • Georgian Bay Community School, Meaford • Grey Highlands Secondary School, Flesherton • John Diefenbaker Secondary School, Hanover • Owen Sound District Secondary School, Owen Sound English Catholic • St. Mary's High School, Owen Sound French Catholic • École secondaire catholique Saint-Dominique-Savio, Owen Sound ==Haldimand County==

English public • Cayuga Secondary School, Cayuga • Dunnville Secondary School, Dunnville • Hagersville Secondary School, Hagersville • McKinnon Park Secondary School, Caledonia ==Haliburton County==

English public • Haliburton Highlands Secondary School, Haliburton ==Regional Municipality of Halton==

English public • Abbey Park High School, Oakville • Acton District High School, Acton • Aldershot High School, Aldershot • Burlington Central High School, Burlington • Craig Kielburger Secondary School, Milton • Dr. Frank J. Hayden Secondary School, Burlington • Elsie MacGill Secondary School, Milton • Garth Webb Secondary School, Oakville • Georgetown District High School, Georgetown • Iroquois Ridge High School, Oakville • M. M. Robinson High School, Burlington • Milton District High School, Milton • Nelson High School, Burlington • Oakville Trafalgar High School, Oakville • T. A. Blakelock High School, Oakville • White Oaks Secondary School, Oakville French public • École secondaire Gaétan Gervais, Oakville English Catholic • Assumption Catholic Secondary School, Burlington • Bishop Paul Francis Reding Catholic Secondary School, Milton • Christ the King Catholic Secondary School, Georgetown • Corpus Christi Catholic Secondary School, Burlington • Holy Trinity Catholic Secondary School, Oakville • Notre Dame Catholic Secondary School, Burlington • St. Francis Xavier Catholic Secondary School, Milton • St. Ignatius of Loyola Catholic Secondary School, Oakville • St. Kateri Tekakwitha Catholic Secondary School, Milton • St. Thomas Aquinas Catholic Secondary School, Oakville French Catholic • École secondaire catholique Sainte-Trinité, Oakville Private • Appleby College, Oakville • St. Mildred's-Lightbourn School, Oakville • King's Christian Collegiate, Oakville ==Hamilton==

English public • Ancaster High School, Ancaster • Bernie Custis Secondary School, Hamilton • Dundas Valley Secondary School, Dundas • Glendale Secondary School, Hamilton • Nora Frances Henderson Secondary School, Hamilton • Orchard Park Secondary School, Stoney Creek • Saltfleet District High School, Stoney Creek • Sherwood Secondary School, Hamilton • Sir Allan MacNab Secondary School, Hamilton • Sir Winston Churchill Secondary School, Hamilton • Waterdown District High School, Waterdown • Westdale Secondary School, Hamilton • Westmount Secondary School, Hamilton French public • École secondaire Georges-P.-Vanier, Hamilton English Catholic • Bishop Ryan, Hamilton • Bishop Tonnos, Ancaster • Cathedral High School, Hamilton • Good Shepherd Hamilton, Downtown Hamilton • St. Jean de Brebeuf Secondary School, Hamilton • St. John Henry Newman, Stoney Creek • St. Mary Catholic Secondary, Hamilton • St. Thomas More, Hamilton French Catholic • École secondaire Académie catholique Mère-Teresa, Hamilton English private • Columbia International College, Westdale • Hamilton District Christian High School, Ancaster • Hillfield Strathallan College, West Mountain Hamilton • Southern Ontario College, Downtown Hamilton ==Hastings County==

English public • Bayside Secondary School, Belleville • Centennial Secondary School, Belleville • Centre Hastings Secondary School, Madoc • Eastside Secondary School, Belleville (formerly Moira) • North Hastings High School, Bancroft • Trenton High School, Trenton French public • École secondaire publique Marc-Garneau, Trenton Private (independent) • Albert College (Pre-Kindergarten to Grade 12), Belleville English Catholic/Christian • Nicholson Catholic College, Belleville • Quinte Christian High School, Belleville • St. Paul Catholic Secondary School, Trenton • St. Theresa Catholic Secondary School, Belleville First Nations Private • Ohahase Education Centre, Tyendinaga Mohawk Territory ==Huron County==

English public • Central Huron Secondary School, Clinton • F. E. Madill Secondary School, Wingham • Goderich District Collegiate Institute, Goderich • South Huron District High School, Exeter • Stephen Central Public School, Dashwood English Catholic • St. Anne's Catholic Secondary School, Clinton • Our Lady of Mt Carmel School, Dashwood ==Kawartha Lakes==

English public • Fenelon Falls Secondary School, Fenelon Falls • I. E. Weldon Secondary School, Lindsay • Lindsay Collegiate and Vocational Institute, Lindsay English Catholic • St. Thomas Aquinas Secondary School, Lindsay ==Kenora District==

English public • Beaver Brae Secondary School, Kenora • Crolancia Secondary School, Pickle Lake • Dryden High School, Dryden • Ignace High School, Ignace • Northern Eagle High School, Ear Falls • Sioux North High School, Sioux Lookout • Red Lake District High School, Red Lake • Vezina Secondary School, Attawapiskat English Catholic • St. Thomas Aquinas Secondary School, Kenora ==Lambton County==

English public • Alexander Mackenzie Secondary School, Sarnia • Great Lakes Secondary School, Sarnia • Lambton Collegiate and Vocational Institute, Petrolia • North Lambton Secondary School, Forest • Northern Collegiate Institute and Vocational School, Sarnia French public • École secondaire Franco-Jeunesse, Sarnia English Catholic • St. Christopher Catholic Secondary School, Sarnia • St. Patrick Catholic High School, Sarnia French Catholic • École secondaire catholique Saint-François-Xavier, Sarnia ==Lanark County==