The news article in post #2 explains a bit more.
The blog was made by the child’s father. And the boy was put into this room because he threw food in the cafeteria.
According to the father, the boy had been in there many times. He had to do 90 minutes in this room to ‘earn’ 90 minutes of classroom time.
When I was in elementary school, I wouldn't have been sitting in a circle to correct my behavior. In fact I would have probably had problems sitting at all.