The North Bergen Bruins compete in the Hudson County Interscholastic League, which is comprised of public and private high schools in Hudson County and operates under the supervision of the New Jersey State Interscholastic Athletic Association (NJSIAA). With 1,852 students in grades 10-12, the school was classified by the NJSIAA for the 2019–20 school year as Group IV for most athletic competition purposes, which included schools with an enrollment of 1,060 to 5,049 students in that grade range. The football team competes in the Liberty Red division of the North Jersey Super Football Conference, which includes 112 schools competing in 20 divisions, making it the nation's biggest football-only high school sports league. The school was classified by the NJSIAA as Group V North for football for 2018–2020. The North Bergen High School track, tennis, football and soccer teams use Bruins Stadium, which is located in James J. Braddock Park. The school's gymnasium serves as the home field for other sports.