I don't really know when I learned about the Vatican...it seems like I've just always known about it or something(I'm not religious, by the way)
Also, we have a World Religions class in the Ontario high school curriculum, and while I haven't taken it, it's pretty much what people are calling for here - unbiased (well, as much as they can, I think...it would also depend on the teacher of course) information about many different religions.
