List of secondary schools in Ontario
The following is a list of 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", , "high school", and "secondary school". Public separate secondary schools are typically named "academy", "Catholic high school", "Catholic secondary school", "college school" or .