Who you are is a more accurate predictor of entrepreneurship and success. That being said the two schools that have the best track records are Stanford and UIUC. Stanford (Google, Yahoo, Sun Microsystems) and UIUC (Netscape, Paypal, YouTube, Oracle, Yelp, Farmville)
http://www.quora.com/What-startups-have-come-out-of-Stanford... http://www.quora.com/What-startups-have-come-out-of-Universi...