N.J. Stat. Ann. § 18A:7-11

53. The commissioner shall appoint an executive county business official to serve in the office of the executive county superintendent of schools for a term of three years. The executive county business official shall assist the executive county superintendent in the performance of the superintendent's duties pursuant to N.J.S.18A:7-8, and perform such other duties as determined by the commissioner. Based on criteria developed by the commissioner, the executive county business official shall be subject to a performance assessment at least once during the three-year term. The business official may be re-appointed on the basis of a satisfactory performance assessment.