Here Are the Business Schools With the Highest Number of Billionaires

— -- intro: Paying tuition to attend business school is an expensive endeavor at upwards of $45,000 a year at some private institutions. But it could be all worth the endeavor at these top business schools, which produce the most billionaire alumni.

Harvard’s MBA program produces nearly three times more billionaire graduates than that of Stanford University, the second-place holder, according to Wealth-X. The research firm of ultra-high net worth individuals with assets of at least $30 million analyzed the 2,325 billionaires globally.

Seven of the ten business schools are in the U.S. Wealth-X found that 21 percent of world’s billionaires who have pursued tertiary-level education have an MBA.

Here are the 10 business schools with the most billionaire alumni:

quicklist:title: Harvard Universitycategory: 64 billionairesmedia: 26831672text: Notable billionaire alums from Harvard Business School (or HBS) include Swiss-Brazilian banker Jorge Paulo Lemann, who is worth about $22.4 billion according to Forbes.

quicklist:title: Stanford University category: 23 billionairesmedia:text: Stanford's Graduate School of Business (affectionately referred to as "GSB" by many students) alums include Nike founder Phil Knight, from the class of 1962.

quicklist:title: Columbia University category: 14 billionaires media:text: Finance-friendly Columbia Business School (or CBS) alums include Warren Buffett and Kwong Ching Woo.

quicklist:title: University of Pennsylvaniacategory: 12 billionairesmedia:text: MBA alums of UPenn, or the Wharton School of the University of Pennsylvania, includes Ronald Perelman, noted by Forbes as a "LBO" or (leveraged buyout) "legend" and worth about $14.5 billion.

quicklist:title: University of Chicago category: 10 billionairesmedia: text: The University of Chicago Booth School of Business includes billionaire financial adviser David Gilbert among its MBA alumni.

quicklist:title: INSEAD category: 9 billionaires media:text: The global school headquartered in Fontainebleau, France, stands for "Institut Européen d'Administration des Affaires" or European Institute of Business Administration.

quicklist:title: New York University category: 7 billionairesmedia:text: One of NYU's MBA alums are Forrest Edward Mars Jr., the candy titan worth $24.2 billion.

quicklist:title: International Institute for Management Development category: 5 billionairesmedia:text: This Swiss school includes Germany's richest woman among its alums: Susanne Klatten.

quicklist:title: University of Southern Californiacategory: 5 billionairesmedia:text: USC's MBA alums include Ivan Glasenberg, CEO of mining and commodity trading company Glencore Xstrata.

quicklist:title: London Business Schoolcategory: 4 billionaires media:text: Kumar Mangalam Birla, chairman of Aditya Birla Group -- one of the largest companies in India -- is an alum of the London Business School.