N.J. Stat. Ann. § 18A:6-3

Regular courses of instruction in the Constitution of the United States shall be given in all public schools and in all private schools, attendance at which is a sufficient compliance with the compulsory educational requirements of this title in this State, which instruction shall begin not later than the opening of the seventh grade in public schools and of the equivalent grade in private schools and shall continue in the high school course and in courses of State colleges and universities and the educational departments of the State and municipal institutions.