What really galls seems to be the assumption by so many on this thread (even those who are sympathetic), that children with challenging behaviours come from dysfunctional families.
DD has Aspergers, she was permanently excluded from her first school at the age of six before she was diagnosed. The amount of judgement, particularly I have received, is staggering and contributed in no small part to a spell of depression I suffered around the time.
Even get headteacher said to me, 'If we didn't have your DS at the school I would have thought there was something terribly amiss with DD's homelife', and she was one of the supportive ones.
FWIW, we have an extremely supportive and functional domestic life, supper together round the table every night, regular bedtimes and routines, we play and chat together, have trips to interesting places and give our children what I would like to think is a happy and nuturing childhood.
When you are battling for your child to recieve the same opportunities as their NT peers life can be struggle enough and knowing there is so much unspoken judgement all around is extremely harmful.
I'm a robust individual from a solid background and it's been one of the hardest things I've ever had to cope with so I can only imagine what it's like for people without my privileges.
Bit of compassion eh?