Neb. Rev. Stat. § 79-261

(1) The school board or board of education may by rule amplify, supplement, or extend the procedures provided in the Student Discipline Act if such actions are not inconsistent with the act. (2) Any action taken by the school board or board of education or by its employees or agents in a material violation of the act shall be considered null, void, and of no effect. (3) The school board or board of education may authorize the delegation to other school officials of responsibilities directed to the principal or superintendent by the act.