The Mac, the iPod, heck, even Buzz Lightyear probably wouldn't have existed had Steve Jobs stayed in school. The future wizard of One Infinite Loop dropped out of Reed College after just six months because of the undue financial strain it placed on his working-class parents' savings. He would go on to eventually found Apple, NeXT Computer and Pixar, becoming an instrumental force in shaping the landscape of modern culture. However, his brief tenure in academia was not for naught. In a 2005 commencement speech he gave at Stanford University, Jobs credited a calligraphy class he took at Reed College with forming the basis for the typography used in the first Macintosh computer.
Top 10 College Dropouts
Graduation season is upon us, and everyone from President Obama to John Grisham is delivering commencement speeches across the country. TIME looks at some of the most successful people to never receive their sheepskins.