I'm an Athiest, yet I grew up Christian, Married into a Cathloic family and am now studying Judaism at a Jewish temple. Just because you don't believe in God, doesn't mean that you shouldn't learn other peoples beliefs. If your kids go around not learning about religion just because their folks are Athiest, they'll be a real dumbass in real life and not understand others beliefs. A well rounded education simply has to contain some religion.