Obviously, if you teach them side by side, anyone with half a brain will sooner or later realize that creationism is simply bullsheet, which is probably why these people want to silence the inconvenient (for them) truth...
It is not science and it's not a question of beliefs.
You should not lie to kids. By telling them about creation in science classes, you lie to them.
No, that's not how it works. By that logic we also would have to teach about ghosts, dwarfs, <stroke>astronomy</stroke>astrology, or just claims made by other religions or folklore. There's a reason we teach our children sciences. They are objective, observable, testable, falsifiable, etc. We want a rational society, not despotism.
This popular image says it all: http://punchkids.net/wp-content/uploads/2007/04/science_vs_f...
I guess I value your opinion, but I do mind, and I have the establishment clause of the first amendment of the United States Constitution with me.