I have honestly never heard of a school that doesn't except those non baptised or from a different denomination when it comes to catholic or christian schools. We lived in a highly jewish area and there were a few schools there that had only jewish kids, which I thought was understandable as religion (and language) is a big part of their education iykwim. But as far as I know they were one of the only religions that had a preference.

*hugs*
Cailin