2. The board of education or the trustees, as defined in section two of this chapter, of every school district within the state, however created, and every board of cooperative educational services and county vocational extension board, shall adopt and amend, as appropriate, a code of conduct for the maintenance of order on school property, including a school function, which shall govern the conduct of students, teachers and other school personnel as well as visitors and shall provide for the enforcement thereof. Such policy may be adopted by the school board or trustees only after at least one public hearing that provides for the participation of school personnel, parents, students and any other interested parties. Such code of conduct shall include, at a minimum:
l. a minimum suspension period, for students who repeatedly are substantially disruptive of the educational process or substantially interfere with the teacher's authority over the classroom, provided that the suspending authority may reduce such period on a case by case basis to be consistent with any other state and federal law. For purposes of this section, the definition of "repeatedly are substantially disruptive" shall be determined in accordance with the regulations of the commissioner;
m. a minimum suspension period for acts that would qualify the pupil to be defined as a violent pupil pursuant to paragraph a of subdivision two-a of section thirty-two hundred fourteen of this chapter, provided that the suspending authority may reduce such period on a case by case basis to be consistent with any other state and federal law.