Notwithstanding any other provision of this subchapter, the board of trustees of a school district may authorize any officer commissioned by the board to enforce rules adopted by the board. This subchapter is not intended to restrict the authority of each district to adopt and enforce appropriate rules for the orderly conduct of the district in carrying out its purposes and objectives or the right of separate jurisdiction relating to the conduct of its students and personnel.
Tex. Educ. Code § 37.103