It'll be incredibly difficult to purge feminist/liberal teachers because of unions and lack of good teachers with degrees.

What can be done is make them afraid to show their crazy beliefs.

If degeneracy is not acceptable in general society then those teachers will still be loons but they'll keep it to themselves. That's where things being merciless on Bud / Disney, never letting up and never forgiving comes in. Swing the pendulum back as fast and hard as you can.