St. Joseph Secondary School, colloquially known as St. Joe's is a Catholic high school located in the Streetsville community of Mississauga, Ontario. The school is administered by the Dufferin-Peel Catholic District School Board. Like other members of the district, students who attend St. Joseph C.S.S. receive teaching on religion, family life and prayer in addition to the standard curriculum found in public schools. The school is linked with the St. Joseph's Parish in Streetsville, which is a part of the Roman Catholic Archdiocese of Toronto.