12. Ray Kroc
Ray Kroc didn't found McDonald's, but he turned it into the world's largest fast-food chain after purchasing the original location from Dick and Mac McDonald. Kroc amassed a $500 million fortune during his lifetime, and in 2000 was included in Time magazine's list of the 100 most influential builders and titans of industry in the 20th century. During World War I, Kroc dropped out of high school at age 15 and lied about his age to become a Red Cross ambulance driver, but the war ended before he was sent overseas.
Our list of notable people who dropped out of school continues with history's most famous magician.