Holy Trinity Catholic Secondary School - Oakville - was created in 2002.
St. Thomas Aquinas Regional Secondary School was created in 1959.
Assumption Catholic Secondary School was created in 1977.
Iona Catholic Secondary School was created in 1993.
Resurrection Catholic Secondary School was created in 1990.
Loyola Catholic Secondary School was created in 1978-09.
Loretto Abbey Catholic Secondary School was created in 1847.
Bishop Challoner Catholic Secondary School was created in 1976.
Cardinal Newman Catholic Secondary School was created in 1973.
Corpus Christi Catholic Secondary School was created in 2008.
Monsignor Doyle Catholic Secondary School was created in 1976.
Marshall McLuhan Catholic Secondary School was created in 1998.
St. Patrick Catholic Secondary School was created in 1986.