Theories should remain theories. Tell the kids all about evolution, but at least mention just once that some people believe that the deity created the world. After all theories are just that THEORIES.
Lad, you really ought to keep quiet about things you know nothing about. It's dead obvious that you have absolutely no idea about what science is or how it's done. If you did you'd be embarrassed to open your mouth and let "After all theories are just that THEORIES" drop out. It displays a truly appalling degree of ignorance, something along the lines of "The moon is more useful than the sun because the moon lights up the night. The sun is out in the day when it's already light." Seriously.