Lessons of a Dream (German: Der ganz große Traum) is a German drama film directed by Sebastian Grobler, loosely based on the life of late-19th-century football pioneer Konrad Koch. In the film, Koch is one of the first English teachers in the German Empire, in Braunschweig. He introduces his students to the new sport of soccer, completely unknown outside of England at the time, to get them interested in English culture and language. In the film, Koch's liberal teaching methods upset his conservative colleagues, the students' parents, and local dignitaries.