N.J. Stat. § 18A:50-6
Any surplus arising from the excess of receipts from donations, tuition fees or from any source other than local taxation over the actual cost of the maintenance and operation of the adult education program in any school year shall not lapse into the unreserved general fund balance of the district, but shall remain in the separate account, reserved fund balance - adult education programs, to be utilized exclusively for carrying out a program of adult education during the next ensuing school year. In the event that the adult education program in any district shall be discontinued for two consecutive school years, any funds remaining in the separate account shall lapse into the unreserved general fund balance of the district.
N.J.S. § 18A:50-6