ADHD kids usually endup workaholics because they have to put much more effort in to reach the same grades as non.
Micheal Phelps and Einstein were ADHD
I also just described my wife and since ADHD has a inherited component and quite often a birth trauma too, I just described my son.
Since kindergarten we have worked with a skills program which is disipline,
self discipline.
Listening, following directions, responding to requests, and ignoring distractions.
This is half of dealing with ADHD, the other half is drugs or natural treatment.
He's now in grade 2 we had him tested after a poor report card , not one grade met expectations. Its now more than 'what are the colours and what is a triangle', reading writing and rithmatic skills were all low.
Testing showed he's above average intelligent :thumbsup:, but two areas below average, speed of decision making and poor working memory, ie list of instructions.

Not wanting to go the ritalin route just yet, some studies show after the 3yr cycle kids are 1 1/2 inch shorter and 5lb lighter among other side effects. I went with fish oil pills, magnesium, and b complex vitamins, also on school days he gets 100mg caffeine pill in the morning. 100mg = 5mg ritalin which is the lowest dosage
http://www.naturalnews.com/z019432.html
Forward a few months later to his next report card, and 2/3s of his grades went up, of the remaining 1/3 ,half of those now have a + beside them and the ones that didn't move up are 'likes working in groups' and that kind of stuff.
So, we will see how the end of yr card turns out, ritalin still could be an option, but if he's coping I'd rather not change him. Even though my wife and I had very good grades through school, I won't put the pressure on him to be an A student. Now that I'm older, a lot of sucessfull peers are guys that did poorly in grade school but had drive or desire and EQ over IQ