"Creationism is banished from the schools"
My kids were told about creationism in biology (within the last few years) in public high school. So you are wrong.
Were they taught it as an episode in the history of science, or as a viable model of the origin of species? The former would be OK, the latter would not.
If the latter, don't read anything into it. Just because somebody gets away with something, it doesn't make it legal. Or right.