New Jersey Statutes Title 19. Elections 19 § 6-11

Each member of the district board shall before entering upon the performance of his duties take and subscribe an oath or affirmation in writing before a duly qualified officer, faithfully and impartially to discharge all his duties as such officer to the best of his skill and ability. Such oaths and affirmations shall be forthwith forwarded to the county clerk and by him filed in his office, and after so qualifying, any member of such board may at any meeting thereof administer any oath or affirmation required or permitted to be taken by this title.