I am so desperate for help. I hope someone has some ideas, as I am clean out of them 
DS (7) has Asperger's Syndrome and some quite severe behavioural difficulties as a result. He has a diagnosis and a Statement, and attends a specialist unit within a mainstream school. This is his second year there, after a horrendous couple of years in a mainstream primary class, where he was repeatedly excluded for being unable to obey the rules (he wouldnt listen to teachers at all or sit still or do as he was told ever; he regularly tried to escape the classroom, lashed out at children and teachers, tried to escape the school grounds etc - horrendous times, basically).
His current school are generally lovely and very understanding. He is in a small class with a high adult-child ratio, so the environment has seemed to suit him better than a big, noisy mainstream class of 30 kids. We have a good relationship with his teacher and the Head, and DS seems reasonably happy there. However, his explosive temper is not improving and as he gets bigger and stronger (he is a very big lad for his age) the results of his outbursts are getting worse.
This week alone he has physically and verbally abused the escort on his bus (he has recently picked up swearing from a boy with Tourettes who travels on the same school bus, so that is a charming addition to his already terrible behaviour
), kicked a door at school and broken a pane of glass in the door, and today he has been excluded (one of the few times the school have ever excluded a child from the SEN unit
) for punching a teaching assistant in the eye when she tried to break up a scuffle between him and another boy over a toy in the playground.
I am mortified
. Just so, so distressed about it, really, and worn out with the endless worry about DS. I feel so angry with him - for hurting other people, for hurting himself with this awful, awful behaviour.
I just don't know where to go from here. The school are having an emergency risk assessment meeting tomorrow and the unit is closed half day because of what happened with DS today. I am gutted. How can I help my DS? How can we stop him lashing out constantly? If anyone has any ideas or experience of this, please, please let me know 