School-based sexual harassment can be defined as a form of sex discrimination that involves unwelcome or unwanted conduct of a sexual or sexist nature that directly interferes with the rights of victims to receive equal educational opportunities. Discrimination based on sexual harassment occurs in a variety of ways, including sexual propositions, lewd comments or jokes, unwanted use of pornographic materials, or inappropriate touching. This entry provides an overview of school-based sexual harassment, focusing in turn on some of its more common expressions and related case law.