D.H.
First I think you might want to do some research on ADHD....it is not a learning disability, most children with it are very smart, and easily bored. My son was doing 3rd grade math in 1st grade, but he needed the medication to help him concentrate at school. I was very easily distracted and was often sent home for being disruptive. Once he started medication he was fine, and even helped other children with their math. He took Ritalin...they started him at 5mg 3 times a day, went to 10mg a few months later, then to 15mg a year later. When he graduated high school he was still on 15mg, just at breakfast and lunch. By then he had learned how to deal better with the distractions. He graduated near the top of his class and even had college credits :)
Medications have changed since he was young, but I feel that it's not fair to make things harder for him. It's not a punishment to take medication. You want to give your child every chance to succeed that you can. I think that some children need that help, that if it's hard because of something they have no control over then as they get older they will fall behind and have poor self-esteem and all that that leads to.
I'm not saying just put him on meds, but do the research. Find out as much as you can to help your son.
D.