Apologies for going somewhat OT.
Everyone here pretty much agrees with the concept that a wealthier family can “buy” their way into a good education for their kids by paying up for a better neighborhood. This has implications for the push for vouchers by different constituencies.
It is no accident that black parents are the biggest advocates for vouchers. Their kids are trapped in the worst schools with, generally speaking, the weakest teachers (all protected in their incompetence by their unions), and unable to escape by buying into better neighborhoods or turning to private schools. Their natural allies in this politically conservative stand ought to be Republicans and conservatives. Yet the latter are content with the present system because their kids go to the best of the public schools. So, by accident or design, the teachers’ unions have slowed the growth of vouchers (though vouchers and non-unionized charter schools are still spreading slowly but surely).