I think we agree that the cost of private education can vary wildly according to each family’s situation.
One thing to consider though is that when you are done “consuming” the education (ie. your kids are grown), you can still sell the house at a premium (because the future buyer of your house might have young kids). So, in essence, you get the “school premium” back. You definitely don’t get your money back after paying for 6 to 12 years of private education.
Now, I understand that I left out the opportunity cost of the “school premium” but you get my point.