Sources tell me that pulpit and teaching Rabbis get special tuition discounts at many of the local day schools. Not just Rabbis who work at the school in question. And not just Rabbis who go through the scholarship process and are found to qualify for such a scholarship.
Some Rabbis are well compensated and don't need the discount any more than the rest of us. My only guess as to why they have this discount is to get a rabbinic endorsement of the school.
I have two problems with it. One is that a discount for one person increases the burden for everyone else. The other problem is that Rabbis are in a position to advocate for change to the tuition crisis. If they don't feel the full brunt of the problem they are less likely to endorse solutions.