between Binghamton, New York and Scranton, Pennsylvania. Louis Arthur Watres was a longtime trustee of Keystone Military Academy, and was one of the leaders who transformed the school into "Scranton-Keystone Junior College" in 1934. Laurence Hawley Watres succeeded his father as a trustee, and remained on the board until 1962, when he was designated a trustee emeritus. In 1944, the name was shortened to "Keystone Junior College". The current name Keystone College was adopted in 1995.
In 1998, the school received approval from the Pennsylvania Department of Education to offer baccalaureate degree programs. In 2014, Keystone received approval to offer master's degrees.
In 2012 the college enrolled 1,683 students but a decade later it enrolled only 1,131 students.
=== Middle States issues ===
In early 2024, the college explored a merger with the Washington Institute for Education and Research (WIER), a Washington, D.C. non-profit organization, but the deal fell apart. Shortly thereafter, the college's accreditor, …
