I can't see a reason to blame the mother- who apparently was working when all this occured and quite possibly might not have reasonably been able to take the time off work to collect her son. Most of the issues seemed to be manifesting at school. If a child feels it's empathised with, understood and respected then they don't behave like that, kids behave in that manner when they feel overwhelmed, out of control and because of their lack of life experience cannot see that this is a transient phase. Sadly a lot of schools are very bad at managing children who are causing disruption and this seems like an instance of school error to me not parent error. The poor kid was concerned that his mother was being made ill by the fact that he was being excluded, so I imagine he felt, guilty, afraid and worthless, all which ought to have been forseen by the school themselves. I mentor lots of ex young offenders and the pattern that emerges is not very often dissimilar to this in the way that schools have dealt with them, it's not always the parents at fault.