Keep Your CEO Out Of Grad School: “Formal education does count for something. M.B.A.s turn up as chief executives more often than people with no advanced degree at all, and 50% more often than executives with law degrees, master’s degrees and doctorates combined. Harvard M.B.A.s have a particular knack for becoming chief executives: 38 of them are CEOs of some of America’s biggest companies. Unfortunately, that doesn’t seem to help their shareholders much.”