I found that crap so extremely frustrating. The administration and teachers in public schools often treat kids like things, a group with a single identity instead of individuals. They don't listen to individual circumstances when dealing with an individual which is bad enough but they often resort to bully tactics like this teacher did. I find this not only ineffective when trying to stop undesirable behavior I actually think it's destructive or damaging. I realize that kids typically get past that stuff, it's not debilitating or anything but that doesn't mean any of those instances should be ignored. I'm also not suggesting no discipline. I do believe a person can be taught how following a reasonable rule benefits them and from that will be encouraged to make that choice of their own free will rather than being frightened or humiliated into doing it.