The gripe that atheists have is that the church thing religion belongs in a science class, and it don't. Religion need to stay where it should be, and that's the church, and the homes of those that believe in it. If you want to be fair about things, have science be apart of bible study, and let the questions come, and give honest answers like Adam and Eve were not the first two people created, and explain to them why.
Peace!
Peace!