What is the best explanation for a student who scores in the 95-100 range on the CSQ, which would be average, but then is really low on the performance scores? For example, a GE below 7.0 and a single digit score in local and national composite PCT.

In regards to a mismatch between ability and achievement, we sometimes "label" them as underachievers. Underachievers meaning they have ability that is not being used as yet, or the student has the ability to achieve at a higher level.

In some cases when we look at the two different ability scores, one may be higher than the other. If the quantitative is higher than verbal, he may have difficulty with reading and language arts; if the reverse, he may do well in reading and language and not so well in math. The former may happen with ESL students..