Your source page has no mention of ritalin. What exactly are you trying to say/post?
I think he is trying to get some anecdotal evidence that might show a relationship between illiteracy and Ritalin use. I think he is trying to generate a hypothesis that kids trained in the “whole word” school of teaching might have higher rates of ritalin use vs kids taught reading through phonics, because (according to the hypothesis) whole word is a failed approach to teaching literacy resulting in more anxious kids (kids who can’t read will be easily distracted in situations where reading or attention to detail is critical).
My source page explains the reading side of the equation; it explains why children are anxious, which then sets up—as we see— the overuse of ritalin, That is the other side of the equation and well known to the public.
The post is exploring the human or intellectual connection between reading and ritalin.