"Harassment, intimidation, or bullying" means any gesture, written, verbal or physical act that takes place on school property, at any school-sponsored function or on a school bus and that:
1. Is motivated by any actual or perceived characteristic, such as race, color, religion, ancestry, national origin, gender, sexual orientation, gender identity and expression, or a mental, physical or sensory disability; or
2. By any other distinguishing characteristic; and
3. Has the effect of insulting or demeaning any pupil or group of pupils in such a way as to cause substantial disruption in, or substantial interference with the orderly operation of the school.
Any incident of harassment, intimidation or bullying will be investigated and appropriate action will be taken by the administration.