It's not so much that ID shouldn't be taught in schools, IMO, it's that it shouldn't be taught in science classes. Kids need to know what is out there, which is why it should be included in relative depthi in every student's social studies cirriculum.
Moving on from Jipe's comments, there are a few problems. These compromises are not going to make everyone completely happy. Some people believe God created the earth in seven literal days, and then made Adam out of some dirt, and Eve out of his rib. Evolution is evil because it means we are just monkeys with pants (and DON'T freak out on my for saying monkey, it is AN EXPRESSION).
Others, like me, believe that God had himself a little lump of matter, his wife was probably out for the night and he decided to play chemist. Things got out of hand and next thing you know, BANG, Universe in his living room. His wife comes home and after a severe chewing out, she decides it might be a good learning experience (and babysitting service) for their kids. So, God sets up all this cool stuff. He bumps a particle here and there so that it just so happens that living things form. Eventually it gets to the point where he has critters running around, flying, swimming, and so on. So he takes one of his older sons and sticks him on one of the planets specially made for his kids. He realizes the dude is going to get lonely, so he puts one of his other kids (let's not get started on the incest shpiel) down and says 'you guys are equal, it's like I made her out of your side dude, she is like your rib, not your foot!'
See, I have come to a personal balance. Most people, don't care, they want it their way, and that is why Burger King will soon be the dominant franchise in fast foot. Except for Wendy's, which will be always omnipotent after McDonalds is overthrown.