Applewood Heights Secondary School (AHSS) is a public secondary school in Mississauga, Ontario, Canada and is part of the Peel District School Board. The school serves around thirteen hundred students with over a hundred teachers and school staff. Applewood is one of only 3 high schools in Mississauga that offers a French immersion program (also Streetsville Secondary School and Clarkson Secondary School). Applewood also offers a Specialist High Skills Major in Sports, as well as a Regional Sports program. The school commenced operations in 1966. Several portable classrooms were added in the late 1980s and early 1990s to serve the (then) 1800+ students, but decreasing enrollment occurring around the turn of the millennium led to their removal.