Harvard has now formed a huge alumni network with 30,000 to 40,000 MBA alumni. If on-the-job managers are added, the number of alumni will reach more than 60 thousand. They have formed a force to be reckoned with in American society and are valuable resources for Harvard MBA. According to statistics, 30% of the alumni will be the president, permanent director, partnership owner or self-employed owner of the company 25 years after graduation.