A HARVARD TEAM OF ORGANIZATIONAL DEVELOPMENT consultants did a sampling of nearly 14 years covering 2000 Chief Executives of global companies listed by S&P. The sampling and tests were fairly exhaustive and unique , and presented a vivid picture of the Executive boardrooms that saw many major global economic events including the Y2K IT burst, Oil-price surge and dive, and 2007 economic down-turn, among others. Though the headline making "attribute" of the published list came out highlighting that the first three of top 5 best performing executives in the world do not have a formal degree in management. Three of the top five are connected to IT industry, and the other two are from petroleum and energy sector. Broadly, four out of 10 successful leaders in IT and six out 10 in energy sector do not possess such formal b-school education. Overall, there are less than 30% of the top 50 listed chief executives having any formal management degree. The top 5 have total industry