N.J. Stat. § 18A:36-33
Notwithstanding any law, rule or regulation to the contrary, any pupil of any public school who serves as a member of a district board of election on the day of any election, pursuant to R.S. 19:6-1 et seq., and attends required instructional sessions related to such membership, pursuant to R.S. 19:50-1 et seq., shall have his or her absence for those reasons recorded as excused absences on that pupil's attendance record or on that of any group or class of which the pupil is a member upon the presentation of such documentation as the superintendent or administrative principal, as the case may be, deems necessary to prove the pupil served as a member of a district board on the day of an election or attended required instructional sessions.
N.J.S. § 18A:36-33