I've just read through this thread. I grew up in what I now see was a liberal, christian family. I went to Sunday school, and to church until I was 15 and we moved house. I went back to church in my 30's, after various life experiences got me reflecting on faith.
I never felt indoctrinated. My mother was open to discussion about anything and everything, and was not dogmatic. "some people believe" etc was her mantra.
My children went to an Anglican high school, where Re was mandatory to GCSE. The school taught comparative religions, and covered all the main religions (and were open to discussions about humanism, atheism, etc)
I agree with Lylygran and Mice's posts 