N.J. Stat. Ann. § 18A:35-7

Every pupil, except kindergarten pupils, attending the public schools, insofar as he is physically fit and capable of doing so, as determined by the medical inspector, shall take such courses, which shall be a part of the curriculum prescribed for the several grades, and the conduct and attainment of the pupils shall be marked as in other courses or subjects, and the standing of the pupil in connection therewith shall form a part of the requirements for promotion or graduation.