So, you want to start a company. Which business school is best?

Steve Kaplan, an entrepreneurship and finance professor at University of Chicago Booth School of Business, says that's the place to be. As proof, he cites recent student ventures, such as food-delivery service GrubHub, which merged with Seamless earlier this year, and Braintree Payment Solutions LLC, acquired by eBay Inc. for $800 million in September.

Stanford...