Harvard Extension School (HES) is the extension school of Harvard University in Cambridge, Massachusetts. Under the Division of Continuing Education in the Harvard Faculty of Arts and Sciences, it offers more than 900 on-campus, online, and hybrid liberal arts and professional courses primarily catered to adult students. The school also offers graduate and undergraduate degrees, academic certificates, and a pre-medical program. While courses are generally open enrollment, degree candidate admission requires "B or better" grades in degree-credit coursework at Harvard, an application, and a formal admissions decision.