Why not examine the evidence for creationism with rigorous scientific principals? I'm not suggesting that creationism be presented as truth, just examined as science. It should take all of half an hour to debunk creationism. If the point is to teach student how to think, then what are you afraid of?
Besides, the question is about public schools. Is any high school student sufficiently based in science, especially biology, to do more than a cursory examination of anything? I think not.
Expect little of your students, and that's what you will get.
To be honest, I don't think that's such a good idea.
Creationists already perceive the teaching of the ToE alone as an attack on their religion. Now if you go ahead and explicitly address Creationism/ID and show that it doesn't hold water as a scientific theory no matter how you turn and twist it, I'm sure that the proverbial fecal matter is going to hit the ventilator as you've never seen before.