The problem is the Bible says that God created humans. The Bible also tells men they can't shave their beards and nobody can work on Sunday or Saturday. If they do teach creationism, they would teach Adam and Eve. There are millions of creation stories, but people only want to teach one. They don't teach religion either.
Most people go to church, that's where they learn their religion.
I don't think the topic of evolution comes up because it makes people uneasy to think that this whole thing of humans evolving from monkeys, because people think that we're above animals. I don't read the Bible and I don't go to church because I don't take the beliefs seriously. I would rather believe that we came from God, rather than humans coming from animals. Because if we did evolve from animals, then that would mean that humans are on some level equal to animals, such as monkeys. That's something I'm not willing to accept.