my general opinion - no. Don't put your kid on amphetamine or ritalin. Maybe it will enable him to fit in easier, but it will fuck him in other ways. He is 8 years old and shouldn't be put on hard drugs. I have "ADHD" and my school life was miserable, but I came out the other end and I am very grateful that my parents resisted the attempts from teachers and social workers to put me on drugs.
Another thing - I think people often only become more socially acceptable by taking these drugs, but not really more productive. They think they are becoming more productive, because you ... tend to think highly of yourself when you have x-times normal dopamine levels. But I studied my girl for a long time when she used to take this stuff (rx dose since she was a kid) and she is less productive on them. She couldn't differentiate between what is important information and what isn't. She spent hours doing other stupid shit or perfecting minor details. So I am not convinced they are even cognitive enhancers. More importantly, she also turned cold and unempathetic.