In this appeal from a final agency decision by the Commissioner of Education, the court addresses the rights that part-time tenured teachers in the non-public school setting enjoy pursuant to the New Jersey Tenure Act, N.J.S.A. 18A:28-1 to -18. The court held that the omission of a contractual guaranteed number of minimum hours per year did not deprive them from the protection against a reduction in compensation or of their seniority rights. Because the record was incomplete, the court remanded with instructions to determine whether the reduction in hours constituted a reduction in their compensation and a reduction in force under the Tenure Act.