I was in grade school when kiddie cocaine (Ritalin) first came out. It was crazy. In the span of a year or so half the class was placed on the stuff. They'd line up every morning for their dose and go to the nurse. Then they'd come back and look like zombies.
I quickly noticed that only the boys were being drugged. I don't remember one girl ever lining up for a dose.
Around the same time they started limiting our time outdoors (recess). So of course the boys were restless. Who wants to sit in a chair listening to some idiot drone on about BS all day? The extreme lack of male teachers also didn't help matter. It's pretty obvious to see why girls don't suffer from "ADHD" as much as the boys do and why they do better in modern school. Boys need stimulation and are supposed to be out doing active stuff all day. Modern school does not cater to their learning needs at all. Combined with the lack of almost no male role models and you end up with them not paying attention and "acting out".
They didn't need drugs. They needed a curriculum designed for them and more male role models to teach it.
It wasn't too long after that I figured out that school was not training me to become smarter. It was training me to live in a prison and work in a factory. Getting you used to doing what you're told, trusting authority figures and responding to the bell whenever it sounded.
Out of all my peers that were placed on Ritalin and later adderall I don't know of any that ever got off of the stuff. They're all in their 40s now and they're all still addicted to speed. Despite what they say it's very very obvious that they're getting high off of it and it always was. Whenever their supply runs out they freak out worse than I did when I'd run out of my opioids. I'd wager the vast majority of them are using meth now. Mainly because it got too expensive to maintain a habit with pills.