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.
In the United Kingdom, the term Registrar is usually referred to the head of the University's administration. The role is usually combined with that of Secretary of the University's governing bodies and in these cases, the full title will often be "Registrar and Secretary" (or "Secretary and Registrar") to reflect these dual roles. The University of Cambridge, England uses the archaic spelling of "Registrary" for this office.
Various grades of professional academic-related staff perform senior administrative and managerial roles in such universities on behalf of the Registrar or Head of Department and head subsections of the administration. Titles afforded to such staff include Academic Registrar, Assistant Registrar, Senior Assistant Registrar and Principal Assistant Registrar.