That probably won't fix what kids are and aren't learning. At best, you'd get evidence for teachers hitting or sexually abusing children (a small small minority

That probably won't fix what kids are and aren't learning. At best, you'd get evidence for teachers hitting or sexually abusing children (a small small minority). At worst, you'd get lots of parents being backseat drivers about what the teacher should and shouldn't teach and how. Parents are notorious for thinking they know what's best for their kids, even though they never studied education. It also doesn't help that historically and by reputation (not necessarily the case now), those that can't cut it in other fields ended up in education, so those parents think that they know better.