Its not an excuse just a fact. He should have gotten a TUE. He was dumb. But I used to teach special ed. If the kid took his ritalin he was calm and easy to work with. Off his medsnhe couldn't sit still.
You're the one who doesn't know what they are talking about.
My son takes Quillevant or something like that for ADHD. It has made a world of difference for him.