Harvard Business School; the mecca of higher education for decades, this school has produced world leaders for such a long time that it has become synonymous with success. HBS costs around $59000 per year, and boasts of the most powerful alumni network any institution has to offer. Although prestigious, its selection criteria often allows a rather large class to be admitted every year and thus it is not as selective as some of the other schools in the list. HBS had a median GMAT score of 726. It was ranked number one by QS Business Report and Financial Time’s aggregated rankings. Notable alumni include Ana Botin (CEO Santander UK), Robert McNamara (former secretary of defense and president World Bank), Michael Lynton (CEO Sony entertainment).