Which Supreme Court case first ruled that government-organized prayer in public schools was unconstitutional?

Answer 1

The Supreme Court case that first ruled that government-organized prayer in public schools was unconstitutional is Engel v. Vitale, decided in 1962. In this landmark decision, the Court held that the New York State Board of Regents' voluntary prayer for recitation at the start of each school day violated the Establishment Clause of the First Amendment.