I guess (from my experience) the expelled kid is actually not that unhappy ;-) about being expelled, since very commonly it actually would prefer not having to go to school. :-)
It's a hard line to balance. In my younger years I should have absolutely been kicked out of school, but as I grew older and my hormones calmed me down, I then was a good student.
I really think I would have benefited from not having schooling for around a year though
