The Collegiate School of Connecticut (later renamed Yale University) is chartered in Old Saybrook.

The Collegiate School of Connecticut was the original name of Yale University when it was founded in 1701. It started as a small, Puritan institution established to train ministers and political leaders for the colony of Connecticut. The school’s early mission was to provide a place where young men could receive a religious education and classical training, especially in Latin, Greek, and theology.
Founding Year: 1701
Location: Initially, the Collegiate School did not have a permanent location and moved between various towns in Connecticut. In 1716, the school settled in New Haven, where it remains today.
Purpose: The school was created largely by Congregationalist ministers who wanted an institution that would preserve European (particularly Puritan) intellectual traditions and educate future religious and political leaders.
Name Change: In 1718, the school was renamed Yale College after Elihu Yale, a British merchant and philanthropist, made a large donation to the institution.