This is kind of crazy. Presumably, there is a correlation between going to a good business school and getting a job with a good business (which generates market

This is kind of crazy. Presumably, there is a correlation between going to a good business school and getting a job with a good business (which generates market-beating returns). So you would expect some kind of correlation just because people think MBAs are valuable...but no. In particular, "Elite MBAs did perform relatively well as CEOs in healthcare and consumer staples". Not significant statistically but the reason this is true is because both healthcare and staples (until recently) have had a killer run. So I don't think share price performance is the best metric but...even then...you would still expect to see something totally different to the actual results. The stuff that looks at the portfolios of bankers is more understandable...but this has been shown elsewhere (generally, poor fund managers do better).