The Eastside High School Ghosts compete in the Big North Conference, a super conference comprised of public and private high schools in Bergen and Passaic counties that operates under the supervision of the New Jersey State Interscholastic Athletic Association (NJSIAA) and was established following a reorganization of sports leagues in Northern New Jersey. For the 2009–10 season, the school competed in the North Jersey Tri-County Conference, an interim conference established to facilitate the forthcoming realignment.
The Eastside High School Ghosts compete in the Big North Conference, a super conference comprised of public and private high schools in Bergen and Passaic counties that operates under the supervision of the New Jersey State Interscholastic Athletic Association (NJSIAA) and was established following a reorganization of sports leagues in Northern New Jersey. For the 2009–10 season, the school competed in the North Jersey Tri-County Conference, an interim conference established to facilitate the forthcoming realignment.