I went to a Christian Primary School [quite mild really, just daily assemblies with a story from the bible, and prayers, acting out the nativity at Christmas, acting out the passover at... whenever that is celebrated. stuff like that] and held a mild belief in Christianity until I was about 15 I guess. Never went to church though. My family aren't strongly religious either, I'd say they're non-practising Christians. The school happened to be closest to home and had a good reputation, it wasn't chosen because of it's religious nature.
Now I identify as mild atheist.