I've noticed a lot of "before you ask, the child doesn't have any SN, the parent told me" bollocks.
In the years before my DC was diagnosed, I didn't tell people because I didn't know. After he was diagnosed, I still didn't offer the information to everyone I talked to - especially to anyone who was calling my child a brat!
Some people seem to start threads with the sole purpose of slagging off a child with an invitation for a whole load of other people to pile in as well, and they reject any suggestion that there may be a good reason why the child was behaving that way.
Just remember that being disabled is no excuse for being disabled - you need to try harder to not be.