Because these boys are being drugged for being children. It's absolutely ridiculous, unnecessary, and probably leads to complications down the road....children, and boys in particular, aren't designed to spend 7 hours a day sitting still in a classroom. It's not their fault, and there's nothing wrong with them the way they are.
They're also prescribing it for the wrong reasons. My little brother is on it, and I liked him hyperactive the way he was before..it was refreshing. I, on the other hand, could probably benefit from being on some sort of ADHD medication because concentrating is a real struggle for me at times, but no one thinks I need it because I'm not overtly hyperactive and have a 3.96 GPA.