Court cases, most notably *Edwards v. Aguillard* (1987), established that "creation science" is not a legitimate scientific theory but rather a religious belief based on the literal interpretation of the Book of Genesis. The courts found that laws mandating the teaching of creation science alongside evolution were unconstitutional because they:
* Promote a particular religious viewpoint: Creation science, as presented in these cases, was inextricably linked to Christian beliefs and aimed to counter the scientific theory of evolution, which is considered a cornerstone of modern biology.
* Lack scientific merit: The courts determined that creation science lacked the empirical evidence, testability, and peer review that characterize legitimate scientific theories. Presenting it as science alongside evolution gives it an undeserved scientific legitimacy.
* Violate the separation of church and state: Requiring the teaching of creation science in public schools is seen as a government endorsement of religion, thus violating the Establishment Clause. The goal of such laws was seen as not merely presenting alternative perspectives but actively promoting a religious worldview within the public education system.
In short, the legal rejection of creation science in schools stems from its religious nature and its failure to meet the standards of scientific rigor, leading to a conflict with the constitutional separation of church and state.