Mega-resort owner Kirk Kerkorian dropped out of school in the eighth grade
Net worth: $3.9 billion (as of Sept. 2013)
Kirk Kerkorian was born on June 6, 1917 in Fresno, California, to Armenian immigrant parents. Dropping out of school in 8th grade, he later became a boxer called "Rifle Right Kerkorian. During World War II, Kerkorian worked for Britains Royal Air Force. He eventually turned his interest to constructing many of Las Vegas biggest resorts and hotels. He opened the original MGM hotel and casino and owns large stakes in the Bellagio, Excaliber, Luxor, Mandalay Bay, MGM Grand, New York-New York, Circus Circus, and The Mirage.