The OCR has the authority to investigate complaints alleging that a student was subjected to discrimination by a public (and often private) school, in violation of federal law, on the basis of:

• race, color, national origin, ethnicity, or ancestry, including a person’s limited English proficiency or English learner status; and actual or perceived shared ancestry or ethnic characteristics, including membership in a religion that may be perceived to exhibit such characteristics (such as Hindu, Jewish, Muslim, and Sikh individuals)
• sex, including pregnancy or parental status; sex stereotypes (such as treating persons differently because they do not conform to sex-role expectations or because they are attracted to or are in relationships with persons of the same sex); and
• disability, including those currently without an impairment that substantially limits a major life activity, but who have a record of or are regarded as having a disability
• age

Know your rights:
https://www2.ed.gov/about/offices/list/ocr/know.html

Complaint Portal Assistant:
https://ocrportal.hhs.gov/ocr/smartscreen/main.jsf