Approximately 80% of undergraduate students live on campus, and often a student lives in the same dorm for the entirety of their undergraduate career. Each hall has its own spirit, tradition, mascot, sport teams, events, dances and reputation. All first-year students are placed in one of the 32 halls upon enrollment, and students rarely switch halls. Notre Dame has an undergraduate hall system which blends the residential college system and the house system. The university also hosts Old College, an undergraduate residence for students preparing for the priesthood. Each hall has its own traditions, events, mascot, sports teams, shield, motto, and dorm pride. Notre Dame residence halls feature a mixed residential college and house system, where residence halls are the center of the student life and some academic teaching most students stay at the same hall for most of their undergraduate studies. Each residence hall is single-sex, with 17 all-male residence halls and 15 all-female residence halls. Several of the halls are historic buildings which are listed on the National Register of Historic Places. There are currently 33 undergraduate residence halls at the University of Notre Dame, including 32 active residence halls and Zahm Hall, which serves as a transition dorm when residence halls undergo construction.
