> Fortunately it is possible to do something very similar, though, which is to tax the group of people who have the level of income that would allow them to send their kids to private school had it been possible.

Except it isn’t similar.

Saying ‘taxing the rich more and put more money into public schools’ may be a good proposal but it is a completely different proposition from ‘take the resources from private schools and give them to public schools’.

Money is not in fact educational resources.