Kouluun

Kouluun is the illative singular form of the Finnish noun koulu, meaning "to the school" or "into the school." It expresses movement toward a destination and is used with verbs of motion to indicate where someone is going or heading. In English, it is commonly translated as "to school" or "to the school."

In practical use, kouluun appears in sentences that describe going toward a school. Examples include: Menen kouluun joka aamu (I go to school every morning) and Hän meni kouluun (He went to school). The illative form answers the question mihin? (to where?). It contrasts with inessive forms such as koulussa (in the school) or elative forms such as koulusta (from the school), which describe location rather than movement.

Kouluun is part of Finnish case system, where illative marks destination after a noun. For koulu, the illative suffix is typically -uun, resulting in kouluun. This form is used with general references to attending school, heading to class, or arriving at the school building, and it appears in everyday speech as a standard expression of going somewhere to study.

Overall, kouluun is a straightforward illustration of Finnish illative usage: a noun indicating a place followed by a suffix that signals movement toward that place. It is most commonly encountered in everyday statements about routines, travel to school, or arriving at educational institutions.