Don’t let ‘em in!
All I can say is that they better have a Sheriff with them if they try that stunt at my house.
I don’t think you have to let the teachers in. If they call, tell them you will meet them at some neutral site if you don’t want them at your home. Personally I’d have no problem with them coming to my home, if arranged in advance. If the teachers are liberal types it might provide a little opportunity for THEM to learn something!