Britain's Sir Richard Branson is a self-made billionaire businessman. He founded Virgin Atlantic Airways, Virgin Records, Virgin Mobile, and most recently, a space tourism company to provide suborbital trips into space for anyone who can afford them. Branson has dyslexia and was a poor student, so he quit school at age 16 and moved to London, where he began his first successful entrepreneurial activity, publishing Student magazine.
Not bad for a high school dropout.