So you are going to place yourself in the place of God, to determine the sincerity of their faith? You have more chutzpah than me - that is a very dangerous place to stand.
and as to the claim of privacy, I’m sure they accept endowments, and charge for tuition, so they are not likely any more private than a Safeway store.
A "private" school is one that is not a government "public" school. The fact that they accept endowments and charge tuition have absolutely nothing to do with whether they are a private school or not.
>> “So you are going to place yourself in the place of God, to determine the sincerity of their faith?” <<
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Total strawman.
We have God’s word that tells us what Yeshua said during his life, and nothing in the school’s statements, nor actions are in conformance therewith.
A private school is no more private than a grocery store. Both advertise and charge for their product.