We all know this is what goes on - every one of us has probably had a run in with a teacher who thinks they know best, that it doesn't look like autism to me, or who says there are children in need of more help. It's endemic.
Teachers always seem to think that they are the smartest people in the room which is really, profoundly sad given the level of ability of many I have met.
But the system stinks from top to bottom. This is why we should try and argue for change and have our voice heard somewhere other than mumsnet.
Not that you are not doing a sterling job tackling this when you see it - obv.