Musiklärare 'Susen' Bergman
Inga Danell (as Alice 'Babs' Nilson)
Fröken Lena Larsson
Rektorn William Löfbeck (as Quarl Hagman)
Rektorskan Agda Löfbeck (as Viran Rydqvist)
Karl-Otto Löfbeck
Vaktmästare Gustafsson
Franskläraren Furubeck
Fru Danell (as Linnea Hillberg)
Fröken Jonsson
Axel 'Acke' Danell
Ture Andersson (as Nisse Hallberg)
Sonja Holmquist
Olga Pettersson
'Plantan'
Lärare (uncredited)
Micke (uncredited)
Altsaxofonist (uncredited)
Elev (uncredited)
Dansare (uncredited)
Tenorsaxofonist (uncredited)
Rockvaktmästare (uncredited)
Orkesterledare (uncredited)
Elev i skolköket (uncredited)
Trumslagare (uncredited)
Sonjas mamma (uncredited)
'Smutte' Lindström (uncredited)
Kontrabasist (uncredited)
Ung man som bjuder upp fru Löfbeck (uncredited)
Restaurantägare (uncredited)
Marianne (uncredited)
'Slaven' (uncredited)
Klarinettist och altsaxofonist (uncredited)
Mickes mamma (uncredited)
Gymnastikelever (uncredited)
Ture Andersson (uncredited)
Den kvinnliga swingkören (uncredited)
Trombonist (uncredited)
Körledaren (uncredited)
Ung man på Shanghai (uncredited)
Klarinettist (uncredited)
Sonjas pappa (uncredited)