The plain answer is, "don't even try". It would be a tremendous disservice to students and a waste of valuable resources if schools were to entertain the idea of teaching religion alongside evolution. Creationism (which flavor?) is absolutely not a legitimate 'alternative' to well-understood and highly reliable science.
Evolution is a matter of scientific fact. Some religious people are able to reconcile their religious belief and science and some cannot. Fortunately, it is illegal to teach religious dogma in public schools and creationism is religious dogma.