The longest serving president of a United States institution of higher education is Eliphalet Nott, who served at Union College in Schenectady, New York, for 62 years (1805–66).
According to a 2007 report from the American Council on Education, only about 5% of all in-office college presidents had served longer than 20 years.
[1] The table below considers candidates who can be demonstrated to have served for 30 years or longer.