N.H. Rev. Stat. Ann. § 189:27-b
Pupil registers, whether kept manually or by means of a computer, shall be retained as a permanent record of the school district, public academy, or nonpublic school.
Source. 1988, 103:1, eff. July 1, 1988. 2018, 223:2, eff. Aug. 7, 2018.