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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.
as Dr. Wahlberg
as Dr. Sune Gans
as Principal
as Emil Nilsson
as Mrs. Nilsson
as Laura
as Sigge
as Putte
as Fredrik 'Dudde' Vedlund
as Song teacher
as Teacher
as Miss Boronius
as Mrs. Björklund
as Mina (Nilsson's housemaid)
as Schoolteacher
as School janitor
as Nils-Georg Björklund