The Haddon Township High School Hawks compete as a member of the Colonial Conference, which operates under the auspices of the New Jersey State Interscholastic Athletic Association (NJSIAA). With 464 students in grades 10-12, the school was classified by the NJSIAA for the 2019–20 school year as Group I for most athletic competition purposes, which included schools with an enrollment of 75 to 476 students in that grade range. The football team competes in the Classic Division of the 95-team West Jersey Football League superconference and was classified by the NJSIAA as Group I South for football for 2018–2020.