The 400 Corridor is the westernmost hallway of the school and connects the Breezeway with the Main Corridor.  There is an entrance to the Quad in the middle of this hallway.  The 400's provide asymmetry to the school, as the western side is one story while the eastern side is three (including the Basement).  The corridor consists of many classrooms, as well as the Assistant Principal's Office, the Guidance Office, the Admissions Office (to which the Vice Principal's Office is attached), the Office of Institutional Advancement, the Library, and the Griffin TV studio.  All of the senior lockers are also normally in the 400's.