"As a graduate of the London School of Economics, Mick Jagger is an astute businessman, " says Richard Klug of Beverly Hills, California-based Sotheby's International Realty, who works with high-profile clients.

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He and his son, a graduate of the London School of Economics who hobnobs with British royals, have amassed a business empire, including monopolies in fisheries and caviar, not to mention property and construction.

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The opinions of students, regularly used at institutions of higher education, have been shown to correlate with overall student performance at the middle-school level, said Thomas Kane, a professor of education and economics at the Harvard Graduate School of Education who has studied the issue.

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The adage may hold in the financial markets, but when it comes to starting a business, it rings hollow, says Erik Hurst, a 33-year-old associate professor of economics at quant haven University of Chicago's Graduate School of Business.

FORBES

Two university individuals, Henry McKinnel, chairman of the Advisory Council at Stanford's graduate school of business, and Michael Boskin, an economics professor at Stanford, sit on the oil company's board.

BBC: Sky,