Hi. We had my 6 year son given a battery of tests to determine why he was underachieving in school. His Cognituve testing indicated he was verbally gifted (134 on WISC verbal) with other indexes average. His achievement scores on the WIAT were much higher - 145, 160, 140, etc. He was also found to have ADHD. Question:

Why were his achievement scores higher than cognituve scores? Could it be a connection to meaningful material? Is it easier to get higher scores on achievement testing?

Thanks!