The boys will get a new class teacher who has discipline, they get in a lot of mischief, so much complaints that they have to read extra during the summer holidays to get started in class 4.
Dr. Wahlberg
Dr. Sune Gans
Principal
Emil Nilsson
Mrs. Nilsson
Laura
Sigge
Putte
Fredrik 'Dudde' Vedlund
Song teacher
Teacher
Miss Boronius
Mrs. Björklund
Mina (Nilsson's housemaid)
Schoolteacher
School janitor
Nils-Georg Björklund
Director
Screenplay
Novel