A study found that disruptive pupils, including some with ADHD were 9 months ahead of quieter pupils in reading and maths. Experts from the Centre for Evaluation and Monitoring at Durham University looked at teachers evaluations of 12,251 4 and 5 year olds of all abilities and found that those children who were overactive and tended to blurt out answers do better than expected because they were found to be engaging in the lessons more. HACSG comment; It has been shown that many Hyperactive/ ADHD children are very bright.