I'm not sure I exactly understand what you're looking for in the testing, and that will make a difference in how I answer - are you worried that dysgraphia and dyslexia might artificially lower scores and you're testing in the situation where you want the best possible scores (to get into a program with a cut-off etc)... or are you seeking testing to better understand the nature of your child's dyslexia/dysgraphia?

polarbear