Was having remote drinks with a friend and his wife yesterday. She's a secondary school teacher in a quite "rough" school (not in the UK). I was quite surprised when, discussing something quite abstract about how different people think and react differently, she had said quite breezily that the majority of teachers she knows "don't believe" in the existence of ADHD.
Incidentally, one of my children is currently being assessed for it, but it is not news that I had shared socially outside of my immediate family. I wasn't offended, but I wonder if it is actually a widespread view behind the closed doors?