- All-Star Cast: Its IMDB page is a who's who of known British actors and rising homegrown talent.
- BFI Top 100 British Films: #94.
- Development Hell: A follow-up to St. Trinian's 2: The Legend of Fritton's Gold was announced in December 2019 and a contest held for a walk-on role. As of February 2020 there has been no progress and with most of the cast moving on to other roles it seems unlikely the movie will ever be made.
- Fake Brit: Mischa Barton might seem to be a Fake Brit among the rest of the predominantly British cast, but she was born in London and retains British citizenship.
- Name's the Same: Flash Harry is not a Shout-Out to Harry Flashman (or vice versa). "Flash" is British slang for ostentatiousness, as in "flashing your money around," and a "Flash Harry" is someone who has a lot of money and likes to show it off (or in this case, someone who has no money but likes to act as if they do/will).
- Playing Against Type: Lena Headey, normally known for playing the Manipulative Bitch or Action Girl characters, plays Miss Dickinson, the meek English teacher.
- Playing Their Own Twin: One notable thing about the films is the fact that in both the original series and the 2007 reboot, the Headmistress, Miss Fritton, is played by a man (Alistair Sim and Rupert Everett) who also plays her brother.
- Saved from Development Hell: For some unknown reason, there was a 14-year gap between the fourth St. Trinian's movie (The Great St. Trinian's Train Robbery, 1966) and the fifth (The Wildcats of St. Trinian's, 1980). But there's no mystery why there was a 27-year gap between Wildcats and the sixth (St. Trinian's, 2007); Wildcats was reportedly so dire that it's the only one not available on DVD.
Trivia / St. Trinian's