HRS §302A-1140
Time off for religious holy days
Public schools must let students miss school to observe religious holy days if a parent or guardian asks in writing. The absence counts as excused, so it won't hurt the student's attendance record.
guardiansparents
The statute, as written — Religious holy days
The board shall release any public school student from school attendance for the purpose of observing religious holy days that fall on regularly scheduled school days, when the release is requested in writing by a parent, guardian, or other person having custody or control of the pupil. Actual attendance at observances shall count as an excused absence at the public schools for all purposes where attendance forms the basis of computation.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.