N.J. Stat. Ann. § 18A:7-12

54. A local school district may apply to the executive county superintendent of schools to have school district services including, but not limited to, transportation, personnel, purchasing, payroll, and accounting, assumed by the office of the superintendent. If the executive county superintendent determines to assume a service, a fee may be assessed the school district for the service. The executive county superintendent of schools may utilize county special services school districts, jointure commissions, and educational services commissions to provide services to local school boards.