N.J. Stat. Ann. § 5:17-2

2. A school board which has established an athletic code of conduct pursuant to the provisions of this act may require that all students, coaches, officials, or parents of students as a condition of participation in any athletic program by the student, agree in writing to a code of conduct established pursuant to section 1 of P.L.2002, c.74 (C.5:17-1) which would require the student, parent, coach or official to refrain from verbal or physical threats or abuse aimed at any student, coach, official or other parent, or, from initiating any fight or scuffle with any person. The board shall have the power to ban the presence of any student, coach, parent or official at any subsequent school sports event who shall violate the athletic code of conduct.