N.J. Stat. Ann. § 18A:17A-1

Districts in cities of the first class with a population over 325,000 shall have a unit control organizational structure. The board of education shall appoint, for a first term not to exceed 3 years and for any subsequent term for said person not to exceed 5 years, an executive superintendent by the recorded roll call majority vote of the full membership of the board. The executive superintendent shall receive such salary as the board shall determine. The salary of the executive superintendent shall not be reduced during his term of office. Notwithstanding any other provision of the law, no executive superintendent shall acquire tenure.