TOP 50 By USNews for 2006 - from a prematurely-issued copy of the book:

Colleges & Universities Yale University
52

<p><a href=“http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VB9-42991JY-4&_coverDate=06%2F30%2F2001&_alid=307840775&_rdoc=1&_fmt=&_orig=search&_qd=1&_cdi=5921&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=aec13cf79a9b5c8267236ea7d19b8d25[/url]”>http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VB9-42991JY-4&_coverDate=06%2F30%2F2001&_alid=307840775&_rdoc=1&_fmt=&_orig=search&_qd=1&_cdi=5921&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=aec13cf79a9b5c8267236ea7d19b8d25&lt;/a&gt;&lt;/p&gt;

<p>“USNWR assigns the greatest weight to academic reputation. However, generated first principal component eigenvalues of tier rankings indicate that the most significant ranking criterion is the average SAT scores of enrolled students.”</p>