N.J. Stat. Ann. § 18A:38-13.1

Any school district entering into a sending-receiving relationship subsequent to severing a prior sending-receiving relationship pursuant to the provisions of N.J.S. 18A:38-13 shall remain in the subsequent relationship for not less than five years. If, after that five year period that sending-receiving relationship is severed, any student in the sending district shall be permitted to complete his secondary education within the receiving district.