Vouchers. Socialistic Denmark use them. It would only cost me slightly more than 200 usd/month to send my (non-existing) kid to a private school. Scaled to US cost it would be something like 50 usd/month more.
Sure those are not the super fancy private schools, but they will always be out of reach of anything but the very rich.
Sure those are not the super fancy private schools, but they will always be out of reach of anything but the very rich.