During its first decade it operated as an age combined high school, mixing students from grade 7 through 11.

In 1983, its senior classes were moved and amalgamated into Chomedey Polyvalent High School (at the time part of the Laurenval School Board), located over two miles away.

By the end of the decade, this was reversed and the Anglophone-instructed student seniors from Chomedey Polyvalent were transferred to Western Laval, making it a combined junior/senior high school once again.

In 1998, it moved to its final campus location at the former Chomedey Polyvalent High School[3] (the original Western Laval High School building was taken over by the newly formed Commission Scolaire De Laval (Francophone school board) and became École Marie-Curie[4] and is currently named École d'éducation internationale de Laval.

Laval Senior Academy now occupies the former Chomedey Polyvalent High School building, which was founded in 1962, and essentially replaces the defunct schools: Western Laval, Chomedey Polyvalent, Laval Liberty and Laurier Senior (Western Laval's junior high segment, which existed in some form since 1972, had been eliminated).