<p>1983 - us news only ranked schools based on academic reputation. UChicago had an awesome academic rep. </p>
<p>2006 - us news ranked schools based on many other factors, and UChicago, up to that point, didn’t care much about factors such as selectivity and retention.</p>
<p>2013 - UChicago cares about factors such as selectivity and retention, and has maintained its sterling academic rep. Result: strong ranking for the school.</p>