There was a debate me and my friends held at school a while back that went:
Is it alright for a atheist family to have a child and not take him/her to church or would that be considired wrong?
I don't see a problem with it. I've heard of children being put in bible study and classes at age four. I feel like religion is such a subject matter to difficult for someone at such a young age.
I mean, it's hard for me to even explain how to work a microwave with my six year old sister.