N.J. Stat. § 18A:40-3.1
Every person employed as a school nurse, school nurse supervisor, head school nurse, chief school nurse or school nurse coordinator, or performing any school nursing service, in the public schools of this state shall be appointed by the board of education having charge of the school or schools in which the services are to be rendered and shall be under the direction of said board or an officer or employee of the board designated by it and the salary of such person shall be fixed by, and paid from the funds of said board according to law, except that the performance of school nursing services in any public school in this state may be continued, under any original contract or agreement entered into, prior to February 27, 1957, or under any renewal or modification thereof, during the term of such contract or agreement or renewal or modification thereof.
N.J.S. § 18A:40-3.1