No teaching staff member in the public schools shall be in any manner affected, in relation to his tenure of service or tenure of service rights, heretofore obtained or hereafter to be obtained, under this or any other law, because of any change in the method of government of the school district or school districts by which he was employed on the date of such change, or by reason of any change of name or title of the position, so held by him on said date, resulting from any such change of government, but he shall continue in said position by its original or changed name or title, as the case may be, with the same tenure of service and the same tenure of service rights which he would have had if such change in the method of government had not occurred.
N.J.S. § 18A:28-15