The document discusses several Supreme Court cases related to freedom of speech and expression in schools. It outlines how students' constitutional rights are recognized but balanced against the educational mission of schools. Cases mentioned establish that speech can be regulated in schools if it substantially disrupts operations or violates others' rights. The document also briefly outlines how the First Amendment has been applied to areas like hate speech, symbolic speech, obscenity, libel, and freedom of assembly and association. It raises questions about drug messages and searches in schools under the First and Fourth Amendments.