Academic efficiency and accuracy will be assessed using the fluency measures from the Woodcock Johnson III (WJ III) test of achievement. Participants will complete the reading fluency, math fluency and writing fluency subtests using alternate forms A and B in each assessment period to prevent retesting bias. This battery has been selected to be included in this study to provide objective measures of academic performance in areas where children with ADHD often show weakness (Czamara et al., 2013, Greven et al.,2013, Schmiedeler and Schneider, 2013).