Because private school parents can pull their kid out and take their tuition elsewhere. They actually have options and can make good on bargaining threats to wa

Because private school parents can pull their kid out and take their tuition elsewhere. They actually have options and can make good on bargaining threats to walk away. Additionally, you don't have public sector or really any teachers unions to deal with at private schools. There are other factors that contribute, but aren't nearly as clear cut as those two.