Creationism is silly, both from a scientific point of view, and from the point of view of serious bible scholars.
Treat creationism in school, sure. Learn pupils to think. Learn pupils also to treat Evolution theory as Evolution theory, and not as the belief that in the end humans are the outcome of the chain of evolution, and therefore the goal of evolution.
Taking creation poetry from religious scriptures, and turn it into science is silly.
Taking evolution theory from science, and turn it into the belief that the whole evolution happened with the purpose to end at humans is just as silly.