They were the hell-raising, out-of-control girls who drank, smoked and gambled their way through a totalitarian boarding school while wreaking as much havoc as possible.
St Trinian’s became shorthand for disorderly conduct across the country, but the fictional school’s roots are far closer to home.
Ronald Searle’s iconic comic strip, which depicted scenes of mayhem from Joyce Grenfell and co. far removed from the inward institutions often described in literature, took its name from an Edinburgh school which experimented with educational methods considered groundbreaking for the time.