Well, I'll be honest, I don't mind discussing allowing the freedom of believing in either creation or evolution in schools, but let's not get into another evolution vs creationism debate? Please?
I suppose the best way to look at it is that it doesn't actually matter what you believe, you are here now. It only effects us because we make it matter. And nowadays, it becomes more and more a matter of politics, which is what is making it so important.
I would say that creationism is more a matter of RE than Science, in my opinion. Creationism trying to create it's own science is a bit like cutting off your nose to spite your face, either the world is 4000 years old or it isn't, what scientists believe shouldn't affect you. But practical science can be taught, basic and organic chemistry etc without referring to 'creation' or 'evolution' at all. (Though a creationist may argue on the point of, for example the age of the bacteria in oil)
As I would say if the opposite were the case, freedom is freedom, that includes the right to believe in creation if you so choose. Personally, I would disagree, but that is what I so choose, theres no point hammering it any more than that.