Ha funnily enough I was neither terribly behaved or non academic. A lot of girls will have had school reports featuring "chatterbox, daydreamer, slow to complete work even though they're capable, must try harder"
The symptoms may be expressed in 'behaviour', but it is not a 'behavioural condition'.
The person most affected is often just the person with ADHD. Head buzzing with thoughts and constantly ashamed of failing again.
Yes I'm sure there are parents who decide their children might have a condition. Every statistic I've read however (and having ADHD my research rabbit hole is enormous and I'm lost for weeks 😅) points to it being under diagnosed, largely due to the years of association with 'badly behaved hyperactive small boy'.
Girls and women in particular are benefiting from the wider knowledge about ADHD as they were the most likely to be missed as children (again due to above stereotype and almost all the original studies featured predominantly young white males).
Maybe do some research yourself, @mids2019 . Maybe start with looking up Dr Russell Barkley's explanations, his lectures are even on YouTube.
Here's a good explanation from Thomas Brown as well:
You can't just tell a psychiatrist to diagnose someone with ADHD, child or adult. 🙄