-You are right that it can be a factor, but I do not believe that it is even a main factor. It’s a side thing that you can blaim it on. Also, of course there are many stories of people who were embarassed and later went off; do you know anyone who was never embarassed by a teacher/prinicipal/parent/friend etc???? An emotionally stable person can handle it unless it is a continous torture by their friends, parents and teachers.
– I don’t think the point of sending a kid down a grade is to embarass them. I think it is to simply send them out of the classroom to; stop the distraction the student is causing so the other children can learn and put the misbehaving child in an atmosphere where they can think/do work and be supervised.