As part of the realignment movement, the NNJIL was disbanded before the 2008-2009 season, and member schools joined three larger conferences, based largely on county affiliations.
Paramus Catholic, the last remaining school of the old NNJIL, joined the North Bergen Interscholastic Athletic League (NBIL).
Fierce rivalries developed in the league, especially in football, where neighboring towns hold decades-long traditional matchups, or where Non-Public schools such as Bergen Catholic and Don Bosco have battled for state championships over the past two decades.
Many of the schools in the NNJIL have been included in the most recent realignment conducted by the NJSIAA as part of the 40-member Big North Conference.
The NNJIL encourages parents and spectators to support good sportsmanship and to be positive role models to student athletes.