If an extra $10k out of an overall family income of $65k is impossible then I'd say that this family isn't managing money well. Were they not putting anything into savings before? Did they have no savings? Again, it'd be a significant sacrifice to afford private school - I've said so since the beginning - but it is possible for a lot more than just "a tiny minority" (your original words).

> All of these schools require some type of education about the school’s founding religion. At a minimum, we are talking about a regular class. Many schools require their students to adhere to the standards of the religion during the course of the school day.

And from this, you jump to "indoctrination". I and other family members have been to religious schools as well. One of my sister's closest friends was Jewish, and went to Catholic without any type of issue. And both my sister and I are about as atheistic as you can get. If merely teaching a class about the founding religion counts as indoctrination then this is a very, very permissive definition of indoctrination you're using.