So just to be clear, am I right in thinking the OP was saying atheists are generally better educated necessarily, but that atheists tend to be better educated about religion?
It seems like most of the posts have gone on the first interpretation rather than the second, but I'd say whether atheists are generally more educated than religious folks is also going to depend on things like which country you're in.
I assumed the op meant better educated about religion rather than better educated in general