Here in Australia, we have private schools that are run by the churches, and they are able to discriminate against teachers on the basis of faith. When I was first applying to casual jobs in my town, I went to one of the schools that styles itself as Christian. I opened up the application forms - which went on for about thirty pages - and was greeted by a whole range of questions, asking me on my thoughts about evolution and its place in the classroom, requesting details of my conversion to Christianity, and requiring me to give character references for people who could attest to it. I was quite literally asked to write a dozen short essays, and the questions were worded in such a way as to make it quite clear that a committee would be going over it and that if I used so much as a word that they disagreed with, I would not be hired. Not one of those questions had anything to do with my ability to teach, much less the subject areas that I teach in. It was, in a word, discrimination. Technically, this would not be permitted under the law, but the schools could get away with it by having a board that represented the interests of the parents in the school. And if that board said "We only want the school to employ Christians because that is what the parents want", then the school would only employ Christian teachers (which they do).