Kaarna is used by 750 comprehensive school pupils and upper secondary students, and it is also a versatile venue for culture, hobbies and events. The central lobby is the heart of the building, with the rest of the spaces arranged around it. At the side of the building is the 300-seater Wrede Hall, which has multifunctional auditorium seating on a rising floor and a full-height stage. The lobby serves as the school’s dining and teaching area, as well as the foyer for the hall. During the day, the hall is divided into teaching rooms of various sizes using adjustable partitions.
The comprehensive school premises are grouped into units in dice-like building masses. Each group unit has a learning square in the middle with a stage and phenomenon wall. The learning areas are adaptable, so they enable phenomenon- and project-based learning, as well as more peaceful study in small groups. The lower floor houses a sports hall with seating for 200 spectators and space for a full-sized floorball court.
Kaarna’s façades alternate between light brick and slating board cladding with a living surface. The colourful rendered sections on the brick walls and the window frames on the wooden walls give the façade a more light-hearted appearance. There are also wooden surfaces in the Wrede Hall and the lobby to offset the varnished concrete. Colour was used more abundantly in the learning areas, and every learning area has its own distinctive colour.