Humiliation

None of the teachers look particularly interested when you come into the room. Old Mdm White is dozing in the corner. Mr Burge picks his nose as he stares at his smartphone.

You'll need to hire some new blood later.

But because they're all so disinterested, no one objects to your plan. It's a simple one. The girls are so bratty because they're proud and privileged. All we have to do is tear that down. From now on, you'll be stalking the halls, and any girl who misbehaves will be embarrassed and humiliated. You could them to come to school naked for a day (you're pretty sure you've read about that in an erotica somewhere), or tie them to the flagpole.

Hmm, now how can you do all that without the state finding out?