Sex Ed is a broad term. In science the schools should certainly be teaching about reproduction. Sorry it isn't the stork. And in science kids should learn about STDs.
Like religion it's up to you and I to teach morals.
I agree with you. In the area of morality, I do not want the state to teach that things which are clearly called sin in the Bible are actually perfectly normal and ok. They do not have to teach that such things are wrong, just leave the subject alone and leave it up to the parents.