II. The school board of each school district and the board of trustees of a chartered public school shall, no later than 6 months after the effective date of this section, adopt a written policy prohibiting bullying and cyberbullying. Such policy shall include the definitions set forth in RSA 193-F:3. The policy shall contain, at a minimum, the following components:

• (a)  A statement prohibiting bullying or cyberbullying of a pupil.