> More than 20% of the 292 of the self-made American billionaires on the most recent list of the World's Billionaires have either never started or never completed college.<p>Only ~25% of Americans over 25 hold a bachelor's degree. If 80% of self-made American billionaires completed college, then assuming it was the only factor, your chances of becoming a billionaire are dramatically better if you have a degree.