Non-public schools can, of course, hire anyone they like. In many - if not most - states, principals in public schools are empowered to hire anyone with relevan

Non-public schools can, of course, hire anyone they like. In many - if not most - states, principals in public schools are empowered to hire anyone with relevant experience under emergency licensure laws. I don’t disagree with your point necessarily, but I also don’t believe it is a significant concern in most places.