Solution: sunlight as disinfectant.
Every public school classroom or auditorium where children are instructed should have an audio/video monitor that logs a transcript for parents and taxpayers to review every word that is uttered by these government employees.
We have as much right to see how our money is being used to educate our children as we do to see how accused criminals are being tried.
Public education should be on the public record.
I love your suggestion. That is what I have suggested at the college level. The videos should be kept for at least 2 weeks, so that parents can request them if they have complaints. Just the fear of a parent complaint, and the video to back it up, should put at least a small amount of proper fear into the leftist teachers.
My daughter's pre-school installed little web-cams in all the classrooms. Parents could log onto the website and get the feed from any internet capable computer. The cameras had no audio and would send out an updated 300x400 picture every 20 seconds, so they were pretty useless for monitoring what was going on.
But, I gotta tell you, the attitude of the teachers took a 180 overnight. All of a sudden they were the best behaved, most on-the-ball bunch you ever met in your whole life. Everybody was working all the time and happy. The difference in the school was like night and day.
And that was with cheap piddly little web-cams. If you wired a public school with full motion cameras with audio, it would completely transform the educational landscape.
This is a great idea, and it's cheap to do. Well, not so cheap if we put in the hands of the educational bureaucracy. But, done right, it need not cost a lot of money.