The Ridgewood High School Maroons compete in the Big North Conference, which is comprised of public and private high schools in Bergen and Passaic counties, and was established following a reorganization of sports leagues in Northern New Jersey by the New Jersey State Interscholastic Athletic Association. For the 2009-10 school year, Ridgewood was part of the North Jersey Tri-County Conference, a conference established on an interim basis to facilitate the realignment. Until the NJSIAA's 2009 realignment, the school had participated in Division A of the Northern New Jersey Interscholastic League, which included high schools located in Bergen County, Essex County and Passaic County, and was separated into three divisions based on NJSIAA size classification. With 1,414 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 school was classified by the NJSIAA as Group V North for football for 2018–2020. The school's sports teams are nicknamed the Maroons. Ridgewood High School athletics are broadcast locally on RHS-TV Sports, a student-produced sports television network, every Tuesday night at 8PM throughout the school year.