Which is the most elite school in the world?

Just under half of France’s 40 largest companies are run by graduates of just two schools: ENA, the national school of administration, and the École Polytechnique, which trains the country’s top engineers. Together the schools produce only about 600 graduates a year. There are fewer than 6,000 ENA graduates alive today, compared with at least 160,000 Oxford alumni.

(HT: Times)