The parabola has the static advantage of being more stable than the arch. Raising the vertex not only creates more room height and thus more air volume, but also increases the temperature gradient. The warm, rising air is not accumulated but transported out of the building through the cavities between the brick walls, which are displaced in the lunettes of the front and back side. As a result, natural ventilation and cooling take place in the classroom. The composition of the building envelope also ensures a comfortable indoor climate. The clay brick, exposed to direct sunlight, conducts little heat due to its porosity and thus always keeps the 8cm thick concrete layer cool. There is no distinction between walls and roof. Complicated connections are therefore avoided and it can be built resource- and cost-efficiently. The classroom measures 4.5m in height, 7m in width and 11m in length. It can provide a comfortable and appropriate learning atmosphere for up to 80 students.