If you take away school choice through private schools, then wealthy people will exercise residential school choice. That is, if you have the $45K for a privat

If you take away school choice through private schools, then wealthy people will exercise residential school choice. That is, if you have the $45K for a private school, but suddenly they become unavailable in NYC; those same people have the means to move outside of NYC. Once they do that, they no longer have to pay income or other NYC taxes, and will simply select an excellent school district in the suburbs, move there, and have their children receive a quality public education. They'll pay for it with high property taxes in that new district, and they will no longer significantly contribute to the NYC tax base, putting NYC public schools at a greater disadvantage than if they had to compete with the private schools.