Lindenwold High School Lions compete as a member school in the Colonial Conference, which is comprised of small schools whose enrollments generally do not exceed between 750-800 students for grades 9-12 and operates under the supervision of the New Jersey State Interscholastic Athletic Association (NJSIAA). With 475 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 Memorial Division of the 95-team West Jersey Football League superconference and was classified by the NJSIAA as Group II South for football for 2018–2020.