10 extremely rich people who never graduated from college (With Pics)

9. Jack Dorsey – Net Worth: $2.5 billion

Jack Dorsey is among the best known programmers today, having co-founded the social networking website Twitter. Even as a kid, he was very interested in writing code, especially in the field of dispatch logistics. He began creating dispatch software at a very young age, which many taxi cab companies still use today. Upon finishing high school, Jack enrolled at the Missouri University of Science and Technology, but quickly transferred to New York University. While he was at NYU, he came up with an idea for a social networking website that later became Twitter. He dropped out of college to work on his idea, and it really paid off. Twitter is one of the most recognizable websites in the world, and Jack has a net worth of $2.5 billion.