West Virginia State Board of Education v. Barnette, 319 U.S. 624 (1943) is a landmark U.S. Supreme Court decision holding that:
"If there is any fixed star in our constitutional constellation, it is that no official, high or petty, can prescribe what shall be orthodox in politics, nationalism, religion, or other matters of opinion or force citizens to confess by word or act their faith therein."
The case involved Jehovah's Witness children expelled for refusing to salute. It remains a cornerstone of student speech and religious liberty jurisprudence.