My answer is obvious, but I'll leave it here to start with.
We need to reduce the representation of women in education massively. The majority of women seeking these roles have malicious intent, and are actively harming young boys.
We know they don't mark boys fairly, but that's just the peak of the insidious feminist plot.
They've clearly been destroying the self-worth of boys in the schools to groom a new generation of woman worshipping simps.
I would care. If people actually watch and criticize this would quickly get overwhelming. Not just legit criticism of lesson plans. Parents are going to be complaining that their Johnny doesn't get more attention. Parents are going to complain if their children get disciplined. The only mitigating factor I can think of is that the worst parents will probably be the most likely to ignore the videos, but busybody parents are about to become more of a pain.
I like the idea of having video tapes, in case a question arises whether a teacher broke a rule, but I'd rather use them like security footage than a broadcast. We already have a pretty powerful feedback mechanism in that parents get to talk to their children. Sure a child is a bit of an unreliable narrator, but that's something adults can work through. Lesson plans should absolutely be shared with parents.
That's my guess of what will happen, but I hope somebody tries it. If these problems are going to happen, they will happen quickly.
If it were a college, you'd have a point. But it's not college, where a lecture is given and students are expected to to do everything on their won. If a child is failing or doesn't understand the subject material, a teacher has a responsibility to get involved and help them out.
If they don't have a case against the teacher, no disciplinary action against the teacher would be taken. If they do have a case, then disciplinary action against the teacher is warranted.
It's not like children don't talk to their parents about what goes on in the classroom, whether they're telling the truth or not. Many kids have smart phones in class and also record what goes on, but only for stuff that they care about.
Also, it's not like teachers don't deal with bad parents as it is.
Worst case scenarios: cameras wouldn't change anything.
Best case scenario: cameras would tell us who's lying and who's telling the truth.
It's the same thing with cops wearing body cams and that's been one of the best things that's ever happened with law enforcement, for both the public and the police officers.