Thank-you all for your kind words.
blob - yes it has been quite a journey - still ongoing.
minniemarx - he is a terrific boy, very sensitive. One unusual(?) thing is that the bully confided in my boy that he wanted to commit suicide (he lost hs dad a few years back). He obviously, despite the bullying, noticed my son's empathic nature. the school has pussy footed around this boy and as a result deep, deep problems are left unattended.
Geomamma - wise words that can't be repeated often enough hopefully someone will one day take notice and give our babies a break
I am firmly of the belief that a bully 'does it to themselves as well as the victim' By belittling or harming another person you ultimately belittle and harm yourself. It is something I teach my boy.