I thought you said that Ritalin will only help if the kids has ADHD, but I’m under the impression that it will help him focus even if his lack of focus is not caused by ADHD.
There was a recent article in one of the magazines (I think Mishpacha) about a woman who wanted a prescription for Ritalin to help her manage, although she didn’t have a diagnosis of ADHD.
Also, I’ve read that professional ball players take speed to help them focus.