Our products have been used for children with diagnoses such as Cerebral Palsy, Down Sydrome, Austism, Asperger's, ADD/ADHD, Dyslexia, brain injuries, as well as children who are considered normal or advanced! Our products have also been used to teach adults to read for the first time! All FlashSeries products were originally written for daughter, who happens to have Down Sydrome. We found that these products not only made learning easy for our special needs child, but easy for all of our children!