Belles of St. Trinian’s, The (1954)

These schoolgirls are more interested in racing forms than books as they try to get rich quick. They are helped by the head-mistress’ brother, Clarence Fritton, played by Alastair Sim, who also plays the head-mistress Millicent. Also with Belinda Lee, Barbara Windsor (uncredited), and Goldfinger Bond Girl Shirley Eaton (uncredited).