I see that Religious Education (RE) is necessarily provided in state schools but can be 'opted out'. How about in prep schools?
I see that all London prep schools have it as a subject one way or another, although I understand it is to introduce and explore all faiths without any worships or biases. My family has no faith whatsoever and we don't want our dc to be taught any religion or join any discussions in any way whatsoever.
What's your experience? Can I opt out?