Many years ago, I went to a small-town high school in Iowa in an area that was known for having more churchs than bars. And I personally thought that our high school biology teacher said it best. On the first day we started studying the origins of life, he said flat out, "The two main theories right now are evolution and creationism. This is a science class, so we'll be talking about evolution. If you want to learn about creationism, talk to a pastor and read a bible. It's all there. There's no need to cover it in a science class."
This was back in the very early 90's, but there wasn't so much a peep of protest from students or parents, as I recall.
Somehow, I get the feeling that approach might not work anymore.
Eva, she who lurks