"Although Ritalin is a stimulant, it has the opposite effect on children who are hyperactive. It reduces hyperactivity by increasing the amount of dopamine in the brain. Used effectively and in properly monitored doses, it improves children’s ability to learn by increasing the ability to concentrate and focus. "
My wife is a professional that deals with elementary school kids in Mass for 504's and IEP's (two different ways to service kids with issues - many of them are on drugs of some sort).
I deal with 15-18 years olds in state care, almost all of them on drugs for various issues. About 1/2 are being treated for ADHD.
It's off topic, but if you must post - get your facts straight.