Steve Ballmer, CEO of Microsoft
To be sure, there are plenty of people who rose to the top of their organizations with only a bachelor's degree. And there are even a famous few in the tech business who dropped out altogether, including Apple's Steve Jobs, Oracle's Larry Ellison, and Michael Dell.
Even Microsoft's Steve Ballmer is a dropout of sorts. He quit Stanford University's MBA program in 1980 to join Microsoft, though he graduated magna cum laude from Harvard University with a B.A. in math and economics.
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Last updated May 05 2011: 2:50 PM ET