In Stone v. Graham, 449 U.S. 39 (1980), the Supreme Court struck down a Kentucky law requiring Ten Commandments displays in public school classrooms per curiam (without full argument). The Court held that the Ten Commandments are "plainly religious in nature" and their mandatory display in compulsory school settings has no secular legislative purpose, violating the Establishment Clause. Stone v. Graham became the controlling precedent for Ten Commandments display laws in schools until Arkansas challenged it in 2025–2026.