Idaho Code § 33-1224

In the absence of any statute or rule or regulation of the board of trustees, any teacher employed by a school district shall have the right to direct how and when each pupil shall attend to his appropriate duties, and the manner in which a pupil shall demean himself while in attendance at the school. It is the duty of a teacher to carry out the rules and regulations of the board of trustees in controlling and maintaining discipline, and a teacher shall have the power to adopt any reasonable rule or regulation to control and maintain discipline in, and otherwise govern, the classroom, not inconsistent with any statute or rule or regulation of the board of trustees.