3. Harvard Business School, London Business School (LBS) and MIT Sloan School of Management, three of the MBA ranking’s longstanding heavyweights, all lost ground to their competitors. Harvard drops two places to fourth, the first time in nine years that the Boston school has been outside the top three. London Business School falls three places to sixth, its lowest position in 14 years. MIT Sloan School of Management falls to 13th place, the first time in 10 years that it has been outside the top 10.