Sackville High School is a Canadian public high school located in Lower Sackville, a suburban community of the Halifax Regional Municipality in Nova Scotia, Canada. It is operated by the Halifax Regional Centre for Education (HRCE). Sackville High School's feeder schools are A.J. Smeltzer Junior High School and Leslie Thomas Junior High School. Along with English, Sackville High offers the French immersion program for all students in grades 9–12. It also has the largest gymnasium in the Atlantic provinces.