<p>I got this from WCAS facts:</p>
<p><a href=“http://www.wcas.northwestern.edu/welcome/facts.html[/url]”>http://www.wcas.northwestern.edu/welcome/facts.html</a></p>
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<p>It doesn’t directly answer your question because the 90% admit rate include law/graduate schools. But you can find the minimum number by assuming 100% placement rate for law and graduate studies: 59% * 100% + 41% * x = 90%. Solve for x and you get x = 76%. That means med-school placement rate is no lower than 76%. My guess is it’s probably around 80%. 
It’s on par with its private peers. Publics, even Berkeley (~60%), usually do worse.</p>