Clarkson Secondary School is a high school in Clarkson community of Mississauga, Ontario, Canada; designated Ward 18 by the Peel District School Board.

Clarkson is an average school in both population (11th, at 866 students) and age (13th, built in 1969)[1] of the entire Peel range of 28 public secondary schools.

On the ground floor, the cafeteria and auditorium are central to the design; a tech/drama wing, staff room, and gymnasiums are placed on the west side, while a classroom wing adorns the east side.

These were open to the hallways, to other classrooms, separated only by pillars.

During the late 1970s, the design was abandoned for a more traditional approach, as such designs proved deficient in the leakage of noise from other classes.