Yale University is an American private Ivy League research university located in New Haven, Connecticut. Founded in 1701 in the Colony of Connecticut, the university is the third-oldest institution of higher education in the United States.

Incorporated as the Collegiate School, the institution traces its roots to 17th-century clergymen who sought to establish a college to train clergy and political leaders for the colony. In 1718, the College was renamed Yale College to honor a gift from Elihu Yale, a governor of the British East India Company. In 1861, the Graduate School of Arts and Sciences became the first U.S. school to award the PhD. Yale became a founding member of the Association of American Universities in 1900. Yale College was transformed, beginning in the 1930s, through the establishment of residential colleges: 12 now exist and two more are planned. Yale employs over 1,100 faculty to teach and advise about 5,300 undergraduate and 6,100 graduate and professional students. Almost all tenured professors teach undergraduate courses, more than 2,000 of which are offered annually.