There are numerous secondary schools in Ontario. Secondary education policy in the Canadian province of Ontario is governed by the Ministry of Education. Secondary education in Ontario includes Grades 9 to 12. The following list includes public secular institutions, public separate schools, and privately managed independent schools in Ontario. All public schools in Ontario (secular and separate) operate as a part of either an English first language school board or a French first language school board.
Although Ontario's secular and separate school systems are both considered public, colloquially the term public school typically distinguishes a secular institution from its separate counterparts: institutions operated by a public secular school board are typically referred to as public schools, whereas institutions operated by a public separate school board are typically referred to as Catholic schools.
Public secular secondary schools may operate under a number of designations, including collegiate institute, école secondaire, high school, and secondary school. Public separate secondary schools are typically named academy, Catholic high school, Catholic secondary school, college school or école secondaire catholique.
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Algoma District
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 Catholic
Assumption College School, Brantford
St. John's College, Brantford
Bruce County
English Catholic
Sacred Heart High School, Walkerton
Municipality of Chatham-Kent
English Catholic
Ursuline College Chatham, Chatham
French Catholic
École secondaire catholique de Pain Court, Pain Court
Cochrane District
French public
École secondaire l'Alliance, Iroquois Falls
École Publique Renaissance, Timmins
English Catholic
O'Gorman High School, 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
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 Catholic
St. Joseph's Catholic High School, St. Thomas
Essex County and Windsor
French public
École secondaire de Lamothe-Cadillac (formerly named École secondaire Michel-Gratton), Windsor
French Catholic
École secondaire catholique E. J. Lajeunesse, Windsor
École secondaire catholique l'Essor, Tecumseh
Frontenac County
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
French public
École secondaire Gaétan Gervais, 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
French public
École secondaire Georges-P.-Vanier, 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
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
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 Catholic
St. Thomas Aquinas Secondary School, Kenora
Lambton County
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
English public
Almonte and District High School, Almonte
Carleton Place High School, Carleton Place
Perth and District Collegiate Institute, Perth
Smiths Falls District Collegiate Institute, Smiths Falls
English Catholic
Notre Dame Catholic High School, Carleton Place
St. John Catholic High School, Perth
St. Luke Catholic High School, Smiths Falls
Leeds and Grenville United Counties
English Catholic
St. Mary Catholic High School, Brockville
St. Michael Catholic High School, Kemptville
French Catholic
Académie catholique Ange Gabriel, Brockville
Lennox and Addington County
English public
Ernestown Intermediate and Secondary School, Odessa
Napanee District Secondary School, Napanee
North Addington Education Centre (K-12), Cloyne
Manitoulin District
English public
Manitoulin Secondary School, M'Chigeeng
Middlesex County
French public
École secondaire Gabriel-Dumont, London
French Catholic
École secondaire catholique Monseigneur-Bruyère, London
District Municipality of Muskoka
English public
Bracebridge and Muskoka Lakes Secondary School, Bracebridge
Gravenhurst High School, Gravenhurst
Huntsville High School, Huntsville
English Catholic
St. Dominic Catholic Secondary School, Bracebridge
English private
Dewey Institute, Bracebridge
Norfolk County
English Catholic
Holy Trinity Catholic High School, Simcoe
Sprucedale Secondary School, Simcoe (for youth held in secure custody at Sprucedale Youth Centre, operated under contract from the Ministry of Children, Community and Social Services)
Northumberland County
English Catholic
St. Mary's Secondary School, Cobourg
Regional Municipality of Niagara
French public
École secondaire Confédération, Welland
French Catholic
École secondaire catholique Saint Jean de Brébeuf, Welland
Nipissing District
French public
École publique l'Odyssée, North Bay
École secondaire publique Northern, Sturgeon Falls
English Catholic
St. Joseph-Scollard Hall Catholic Secondary School, North Bay
French Catholic
École secondaire catholique Algonquin, North Bay
École secondaire catholique Élisabeth-Bruyère, Mattawa
École secondaire catholique Franco-Cité, Sturgeon Falls
Ottawa
Oxford County
English Catholic
St. Mary's Catholic High School, Woodstock
French Catholic
École secondaire catholique Notre-Dame, Woodstock
Parry Sound District
English public
Almaguin Highlands Secondary School, South River
Parry Sound High School, Parry Sound
French public
École publique aux Quatre-Vents, Parry Sound
English private
Rosseau Lake College, Rosseau
Regional Municipality of Peel
French public
École secondaire Jeunes sans frontières, Brampton
French Catholic
École secondaire catholique Sainte-Famille, Mississauga
English private
Bronte College, Mississauga
Elpis Academy, Mississauga
Mentor College, Mississauga
Perth County
English Catholic
St. Michael Catholic Secondary School, Stratford
Peterborough County
English Catholic
Holy Cross Secondary School, Peterborough
St. Peter's Secondary School, Peterborough
Prescott and Russell United Counties
English public
Rockland District High School, Rockland
Russell High School, Russell
Vankleek Hill Collegiate Institute, Vankleek Hill
French public
École secondaire publique L'Académie de La Seigneurie, Casselman
École secondaire publique Le Sommet, Hawkesbury
English Catholic
St. Francis Xavier Catholic High School, Hammond
St. Thomas Aquinas Catholic High School, Russell
Prince Edward County
English public
Prince Edward Collegiate Institute, Picton
Rainy River District
English public
Atikokan High School, Atikokan
Fort Frances High School, Fort Frances
Rainy River High School, Rainy River
Renfrew County
French public
École secondaire publique L'Équinoxe, Pembroke
English Catholic
Bishop Smith Catholic High School, Pembroke
St. Joseph's Catholic High School, Renfrew
French Catholic
Centre scolaire catholique Jeanne-Lajoie, Pembroke
Simcoe County
French public
École secondaire Le Caron, Penetanguishene
Ecole secondaire Roméo Dallaire, Barrie
French Catholic
École secondaire catholique Nouvelle-Alliance, Barrie
Stormont, Dundas and Glengarry United Counties
French public
École secondaire publique L'Héritage, Cornwall
English Catholic
Holy Trinity Catholic Secondary School, Cornwall
St. Joseph's Catholic Secondary School, Cornwall
St. Matthew Catholic Learning Centre, Cornwall
French Catholic
École secondaire catholique La Citadelle, Cornwall
École secondaire catholique Le Relais, Alexandria
Sudbury District
French public
École Cap sur l'Avenir, Sudbury
École secondaire de la Rivière-des-Français, Noëlville
École secondaire Hanmer, Hanmer
École secondaire Macdonald-Cartier, Sudbury
Thunder Bay District
French public
École secondaire Château-Jeunesse, Longlac
École secondaire Cité-Supérieure, Marathon
École secondaire Manitouwadge, Manitouwadge
English Catholic
St. Ignatius High School, Thunder Bay
St. Patrick High School, Thunder Bay
First Nations private
Migizi Miigwanan Secondary School
French Catholic
École secondaire catholique de la Vérendrye, Thunder Bay
Timiskaming District
English public
Englehart High School, Englehart
Kirkland Lake District Composite School, Kirkland Lake
Timiskaming District Secondary School, New Liskeard
French Catholic
École secondaire catholique l'Envolée du Nord, Kirkland Lake
École secondaire catholique Sainte-Marie, New Liskeard
Centre d'éducation des Adultes, New Liskeard
Toronto
French public
École secondaire Étienne-Brûlé
École secondaire Toronto Ouest
Le Collège français
French Catholic
École secondaire catholique Monseigneur-de-Charbonnel
École secondaire catholique Père-Philippe-Lamarche
École secondaire catholique Saint-Frère-André
Independent
Bayview Glen School
Bishop Strachan School
Branksome Hall
Crescent School
Crestwood Preparatory College
De La Salle College
Elpis Academy
Greenwood College School
Havergal College
Hawthorn School for Girls
North Toronto Christian School
Royal St. George's College
St. Clement's School
St. Michael's College School
Toronto French School
University of Toronto Schools
Upper Canada College
Tanenbaum Community Hebrew Academy of Toronto
York School
Z3 Education Centre
Regional Municipality of Waterloo
French Catholic
École secondaire Père-René-de-Galinée, Cambridge
Private Schools
Rockway Mennonite Collegiate, Kitchener
Scholars' Hall University Preparatory School, Kitchener
St. Jude's Special Education Day School, Kitchener
St. John's-Kilmarnock School, Breslau
Our Lady of Mount Carmel Academy, New Hamburg
Woodland Christian High School, Breseau
Wellington County
English Catholic
Bishop Macdonell Catholic High School, Guelph
Our Lady of Lourdes Catholic High School, Guelph
St. James Catholic High School, Guelph
Regional Municipality of York
French Catholic
École catholique Pape-François, Whitchurch-Stouffville
École secondaire catholique Renaissance, Aurora
French public
École secondaire Norval-Morrisseau, Richmond Hill
Independent
Pickering College, Newmarket
St. Andrew's College, Aurora
Villanova College (Canada), Richmond Hill
The Country Day School, King City