Group is a classification of the school size as determined by the New Jersey State Interscholastic Athletic Association (NJSIAA).
After the original NJSIAA realignment in 2009, Paramus Catholic High School was added to the NBIL while Wayne Hills and Fair Lawn left to join the North Jersey Tri-County Conference.
The NBIL ceased to exist following the 2009–10 seasons, and its remaining member institutions joined with most of the NJTCC schools to form the Big North Conference.
The North Bergen Interscholastic Athletic League allows member schools to compete with each other in many sports spread out among three seasons.
The NBIL encourages parents and spectators to support good sportsmanship and to be positive role models to student athletes.