Centennial Regional High School (CRHS, French: École secondaire régionale Centennial) is an English-language co-educational comprehensive public high school located in the Greenfield Park borough of Longueuil, Quebec, Canada, a suburb of Montreal. A part of the Riverside School Board, it was opened in 1972 and named to commemorate the centennial anniversary of Canada's confederation. The school's student body is culturally diverse. In the 2011-2012 year, the school adopted a house system in an attempt to raise school spirit. It was previously a part of the South Shore Protestant Regional School Board.