"Freshmen" is the traditional term for first-year students arriving at school in the United States, but the slang term 'frosh' is also used. Due to the perceived gender exclusiveness of the term, some institutions including the University of North Carolina have adopted "first-year student" as the preferred nomenclature. Lasting between a few days and a week, the orientation is these students' informal introduction and inauguration to the institution. Typically, the first-year students are led by fellow students from upper years over the course of the week through various events ranging from campus tours, games, competitions, and field trips. At smaller liberal arts colleges, the faculty may also play a central role in orientation.