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In Edwards v. Aguillard, the U.S. Supreme Court strikes down a Louisiana law requiring that “creation science” be taught whenever evolution theory is taught and vice versa. The Court rules that the purpose of the law is religious, not secular: “The Louisiana Creationism Act advances a religious doctrine by requiring either the banishment of the theory of evolution from public school classrooms or the presentation of a religious viewpoint that rejects evolution in its entirety.”