The skyrocketing cost of college has rekindled the age-old debate about whether parents should pay the extra $50,000 or more for a so-called elite school. But if return on your money is what you're after, it's hard to argue with a recent study from the research firm Wealth-X, which ranked universities around the world by the number of billionaires and ultra-high-net-worth individuals to whom they have awarded degrees.
Each school, as the representative alumni we've assembled here show, has its own character. But they all have a few traits in common. Nearly all of the top 10 for billionaires are elite, private universities. More importantly, according to David Friedman, president of Wealth-X, is the access they offer. The list, said Friedman, "validates what we all whisper and now we know: It's not just what you know, it's who you know."
Click ahead to see the top 10 universities, and the billionaires who attended: