I can't be totally sure, but I think I've heard of this. Recently I was having lunch with a friend and a distraught woman was speaking of being terminated from a local church daycare. All I caught was "it's unreasonable and I'm out of a job'". She appeared very polite although visibly unsettled.
It's a local thing and honestly I've seen enough to keep my guard up.
I don't agree with her being terminated just because her religion and the faith of the church isn't on the same level. I would only be concerned if she was using her position to try and teach the children something going against what the church she's working for teaches.
I believe in tolerance.