<p>Here’s the NY Times article on this. You’ll need a subscription. They have a nice data table that shows this info.</p>
<p><a href=“http://www.nytimes.com/2006/07/30/education/edlife/30edlife_data.html?ex=1157601600&en=2396253422b839d2&ei=5070[/url]”>http://www.nytimes.com/2006/07/30/education/edlife/30edlife_data.html?ex=1157601600&en=2396253422b839d2&ei=5070</a></p>
<p>or in case that link doesn’t work:</p>
<p><a href=“http://www.nytimes.com/2006/07/30/education/edlife/30edlife_data.html[/url]”>http://www.nytimes.com/2006/07/30/education/edlife/30edlife_data.html</a></p>