New Jersey Statutes Title 18A. Education 18A § 17-43

(a) The commissioner may, in accordance with rules and regulations promulgated pursuant to this article and upon a finding of need therefor, authorize any board of education to employ, subject to the provisions of Title 11, Civil Service,  1 of the Revised Statutes, one or more public school law enforcement officers, and to station such public school law enforcement officers in public schools of this state during hours when said public schools are normally in session or are occupied by public school students or their teachers.

(b) No such public school law enforcement officer shall be employed, except upon the application of a board of education and with the approval of the county superintendent.