<p>sbjdorlo, 1830 is the 1st SD. So he was already +1 SD in 7th grade. 2150 is the beginning of the +2nd SD, so he clearly improved at least one 1 SD. However, the SAT is unable to identify greater improvements. So it does not mean he did not improve more. In fact, since he placed so highly in math competitions it demonstrates he reached the 1/1000 or 3rd SD before starting college. The 3rd SD is an academic star, So, definately someone MIT and other top unis would be interested in. :)</p>
<p><a href=“http://en.wikipedia.org/wiki/Standard_deviation[/url]”>http://en.wikipedia.org/wiki/Standard_deviation</a></p>