Following the Edwards v. Aguillard decision by the Supreme Court of the United States, that a Louisiana law requiring that creation science be taught in public schools whenever evolution was taught was unconstitutional, creationists renewed their efforts to introduce creationism into public school science classes. This effort resulted in Intelligent Design which, to avoid legal prohibitions, leaves the source of creation an unnamed and undefined Intelligent Designer, as opposed to God.
This ultimately resulted in the “Dover Trial,” Kitzmiller v. Dover Area School District. On 20 December 2005 the court ruled in favour of the plaintiffs, who charged that a mandate that Intelligent Design be taught in public school science classrooms was an unconstitutional establishment of religion. The 139 page opinion of Kitzmiller v. Dover is a landmark decision establishing that creationism and Intelligent Design were religious teachings and not areas of legitimate scientific research