Zuckerberg on hiring mission to Harvard

BOSTON, Massachusetts - Getting into Harvard is rewarding; walking away can be even better.

Take Mark Zuckerberg, founder of Facebook Inc, Microsoft Corp Chairman Bill Gates, folk singer Pete Seeger, actor Matt Damon and more.

Overachievers all, by dropping out they put themselves in a group that's proven to be twice as selective as the incoming freshman class, according to school statistics. Harvard College accepted 6.2 percent of almost 35,000 applicants for the 2011-2012 academic year. Its current graduation rate of 97 percent means just 3 percent leave before they're done.