Typically, a registrar processes registration requests, schedules classes and maintains class lists, enforces the rules for entering or leaving classes, and keeps a permanent record of grades and marks. In institutions with selective admission requirements, a student only begins to be in connection with the registrar's official actions after admission. At Cambridge, the Registrary is also Secretary to the University Council. As the head of the University's Unified Administrative Service, the Registrary is responsible for the central management and the non-academic services of the University. The office of the Registrary was established in 1506, to compile and maintain the records of the University.