Twin Rivers Unified School District programs, activities, and practices shall be free from unlawful discrimination, harassment, intimidation, and bullying based on actual or perceived race, color, ancestry, national origin, ethnic group identification, age, religion, marital or parental status, immigration status, physical or mental disability, sex, sexual orientation, gender, gender identity, or gender expression; or on the basis of a person’s association with a person or group with one or more of these actual or perceived characteristics.