For some time now, there have been schools in Germany whose aim is not to segregate any child. Everyone should be integrated with their minor or major handicaps, advantages or weaknesses, whether highly gifted or severely disabled. Klassenleben tells the story of such a school, its teachers, its children and the immense challenge of learning. From winter to summer 2004, Hubertus Siegert and his film team accompanied class 5d at the Fläming elementary school in Berlin. At eye level with its protagonists, the film observes the learning and life of pupils with extremely different abilities in a class of 20 children, four of whom have learning difficulties or severe multiple disabilities, and 16 "normal pupils", including some so-called gifted pupils. Do lessons succeed in such a heterogeneous group? Is everyone motivated to learn where the competition is not between "gifted" children?