<p>That is not correct. Columbia generally is considered to have the most Nobel affiliates of any institution in the
world. Yes there are different ranking, but each school is ranked in the exact same manner for each ranking. There are rankings for graduates only, professors only, affiliates only, etc. Harvard has a high number because many researchers end their careers at Harvard and or teach one course and are then considered "Harvard affiliated winners.’ For the record, Columbia’s official number is now 102 including the College graduate Barack Obama.</p>