Edwards v. Aguillard, 482 U.S. 578 (1987) was a legal case about the teaching of creationism that was heard by the Supreme Court of the United States in 1987. The Court ruled that a Louisiana law requiring that creation science be taught in public schools, along with evolution, was unconstitutional because the law was specifically intended to advance a particular religion.
On June 19, 1987 the Supreme Court, in a seven to two majority opinion written by Justice William J. Brennan, ruled that the Act constituted an unconstitutional infringement on the Establishment Clause of the First Amendment, based on the three-pronged Lemon test, which is:
The government’s action must have a legitimate secular purpose;
The government’s action must not have the primary effect of either advancing or inhibiting religion; and
The government’s action must not result in an “excessive entanglement” of the government and religion.
source: Wikipedia (H/T Infoplease, for the date/event )
