You people realize that when they say abusive they don't mean physically right? I doubt anyone was upset because they thought their kid could get hurt or some stupid stuff you people have been running with. It's abusive in the sense that it's only purpose is to embarrass the kid in front of the class.
I don't think it's the worst thing a teacher could do, but it is definitely not appropriate to be doing. I'm sure a lot of the kids didn't care, but I'm sure a few did. A teacher shouldn't be trying to embarrass a student and make them feel uncomfortable.
