I would like to pass along one more idea that I use in my classroom. Some students (ADD/ADHD or not) experience more reading comfort with this strategy:
*** Try using colored paper for printing all materials including worksheets, outlines, notes, etc. Experiment with pastels as well as bright shades. One particular color may produce the best results for a certain individual student. Those persons with ADD/ADHD challenges often find that the white background on a page of text can be (1) distracting, and (2) it decreases their ability to focus and read.
You can try out this idea (FREE!) by going to www.readingfocuscard.com and clicking on the the various color blocks at the top of the pages. By doing so, you will see what it is like to read text over each pastel shade available. I hope that this will help you and your child.
Hope your students AND you will find this strategy helpful.