Bukatsu' refers to club activities in school, be they sports clubs (i.e. baseball club, tennis club, judo club etc.), or cultural clubs (i.e. flower arrangement club, drama club, brass band club and so on). These are extra-curricular activities and when they first join the school students watch various introductions by their seniors, then choose freely the club that most interests them. Clubs are managed independently by the students, although there is also a teacher who acts as advisor. Those who aren't members of a particular club activity are often said to belong to the 'kitaku-bu' (going-home club).