Like TeniBear, there was a school we wanted to send him to (where DH went), but the fees are $11,000 for prep. I find that ridiculous, so we are going for the next best school which is also closer to home.
At this point, my only pre requisite was a good reputation and religious education. Hopefully the rest fall into place when we go and actually see it and get more info about the school. Everything I have read so far I have been happy with.