WEST VIRGINIA STATE BOARD OF EDUCATION v. BARNETTE, 319 U.S. 624 (1943)
Facts of the Case:
As part of instituting a required curriculum teaching American values, the state of West Virginia forced students and teachers to participate in saluting the flag. Failure to comply with this resulted in expulsion and the student was considered illegally absent until readmitted. A group of Jehovah's Witnesses refused to salute the flag because it represented a graven image that was not to be recognized.
Decision:
In an 8-1 decision, the Court ruled that the school district violated the rights of students by forcing them to salute the American flag.
There are some gems in this. I'm rather fond of this one.
Free public education, if faithful to the ideal of secular instruction and political neutrality, will not be partisan or enemy of any class, creed, party, or faction. If it is to impose any ideological discipline, however, each party or denomination must seek to control, or failing that, to weaken the influence of the educational system.