N.J. Stat. Ann. § 18A:37-42

5. The principal of a school selected to participate in the pilot program shall be required to limit the number and duration of student expulsions and suspensions to the greatest extent practicable. The principal shall demonstrate a commitment to exhausting other forms of non-exclusionary discipline prior to using out-of-school suspensions or expulsions, unless otherwise required by law or unless a student's continuing presence in school poses a threat to school safety or a disruption to other students' learning opportunities.