<p>An interesting related article: </p>
<p>[Gifted</a> Exchange: Are 20% of high school drop-outs gifted?](<a href=“http://giftedexchange.blogspot.com/2008/09/are-20-of-high-school-drop-outs-gifted.html]Gifted”>Gifted Exchange: Are 20% of high school drop-outs gifted?)</p>