Good point. But you don't introduce drink to tiny babies! I'm not saying that children should be kept ignorant about religion until they reach the age of majority. Religion has been part and parcel of world history and no school education would be complete without an objective consideration of it. I am saying that I think it's wrong to give children a set of beliefs, presented to them as truth, without telling them that this is simply one set of beliefs that one body of people hold to be true, and here are some others that you may consider to be equally valid (or equally invalid even). And they should be listening to their science teachers telling them to accept nothing as fact/truth until they have been presented with evidence. Real evidence, not witness or hearsay. The Bible contains very little evidence.

I'm not sure I accept your juxtaposition of hostile values with informal atheism...