I think there in a great deal to be said for religious education in the sense of teaching about religion and biblical literacy. Both those things, by the way, I suspect will prepare a child to give up religion. If you are taught comparative religion, you are more likely to realise that there are other religions than the one you have been brought up in. And if you are if you are taught to read the bible, I can think of almost nothing more calculated to turn you off religion.