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When John Xie began studying business and entrepreneurship atBabson College, he didn't have any of the typical freshman worries about workload or time-management skills. Xie, now 22, entered the Wellesley, Mass., school already accustomed to long hours, high pressure and tight deadlines, thanks to the fact that he founded his first company, the successful web hosting firm CirtexHosting, when he was just 13 years old.

"High school was really challenging, because I didn't have any time. Basically, the schedule was terrible," Xie says. "I really had very little time to work on a business. But I would say that when I entered Babson, it was at a level where the company could run on its own without me having to run the day-to-day operations."