From acclaimed director Frank Launder,'The Happiest Days of Your Life' is a precursor to the hugely successful St. Trinian's series, set in Nutbourn College, the most established and respectable of boy's schools. A military mistake billets a girls' school to share the college's premises, to the outrage of their horrified headmaster and headmistress, played with comic mastery by Alastair Sim and Margaret Rutherford. Initially the two are hostile to one another. However, with a staff of dazed, eccentric teachers and a student body of knowing and troublesome children, they are forced to pull together as the situation stumbles from the sublime to the ridiculous!