My children learn about different cultures and religious beliefs from an open religious studies perspective. It's imperative that they learn these things about the world around them.
However, blind indoctrination is a whole different ball game. RE at school is exactly that, and I will never allow someone to teach my children the myths which are relayed in RE classes, as fact, from the one religious perspective.
In this case, the parents wishes are being blatantly disregarded. That's not acceptable in this situation, or any other for that matter.