From Buck on Atheism,
"If Darwinism is inherently atheistic, as you say, then obviously it can't be taught in public schools." "And why is that?" inquired Dennett, incredulous. "Because," said Jordan, "the Supreme Court has held that the Constitution guarantees government neutrality between religion and irreligion." Dennett, looking as if he'd been sucker-punched, leaned back against the wall, and said, after a few moments of silence, “clever.” After another silence, he came up with a reply: He had not meant to say that evolution logically entails atheism, merely that it undercuts religion.