For the purposes of §§ 16-8-7 to 16-8-13:
(1) “School” is construed to mean any educational institution operated on a nonprofit basis, having a graded course of instruction with prescribed standards for the completion of each grade, with compulsory class attendance, and records of class work regularly maintained.
(2) “School board” includes city or town school committees or any person or group responsible for the operation of a private or a parochial school.