In response to the OP.
Even if his kids went to public school he couldn’t afford a house Brooklyn. He would save 16k a year. Assuming a house in Brooklyn is at least 750k (probably much more in reality) with a down payment of 150k, it would take over 9 years to save up for a down payment using tuition savings. Even if he had some money saved up already it would still take a while.
I am unsure if tuition is the problem that he needs to address.
That being said I do not want to be insensitive to anyone who is struggling to pay tuition and I do recognize that it is a tremendous expense for a jewish family.