* AdaptationDisplacement: Most people, specifically younger ones, are more familiar with the 2007 reboot movie than the previous film series that was produced by Creator/SidneyGilliatAndFrankLaunder. Both have long displaced the Ronald Searle cartoons they were based on from public memory.
* SugarWiki/AwesomeMusic:
** [[https://www.youtube.com/watch?v=0DebmhCx8EA The theme song for the 2007 movie.]]
** "If I can't dance, then I don't want any part of your revolution!" Thank you, Music/SophieEllisBextor.
* BestKnownForTheFanservice: The 2007 film has a memorable scene where Creator/TalulahRiley's character is forced to run through the school while naked and wet.
* FridgeBrilliance: There's actually a good explanation for the school's uncanny ability to [[CorruptTheCutie turn good girls who should know better into proper St. Trinian's girls]]: all of them came from restrictive or outright abusive environments, and at St. Trinian's they invariably find people who let them be themselves (Annabel Fritton, in particular, had been bullied at her past school and saw St. Trinian's headgirl knocking out her bully).
* LesYay:
** Just what ''is'' going on between Matron and Camilla Fritton? They do seem to be very close. It's Matron's hand that Camilla clings to when she's upset at Mr. Darcy's funeral. Matron is also seen walking along arm-in-arm with Miss Cleaver, the sports teacher.
** There seems to be some of this between Miss Dickinson and Chelsea Harper during the scene where Miss Dickinson discovers the girls have been cheating at School Challenge. She tells Chelsea that she's been watching her with her feminine wiles and her "saucy ways", and reassures her that being smart is "very, very sexy". It does seem a little like she's attracted to Chelsea.
** In one of the deleted scenes, Chelsea offers to try seducing the Cheltenham Ladies' College team in the School Challenge final; and when one of the other Posh Totties points out that "Cheltenham is a ''ladies' '' college, Chelsea!", her response is a shrug and declaring, "I don't mind giving it a try".
%%* MagnificentBastard: Does it need saying?
* RetroactiveRecognition:
** Who knew that Andrea, the goth girl, would go on to have an [[Music/PalomaFaith amazing singing career?]]
** Or that Beverly, the ditzy receptionist, would become the [[Series/DoctorWho Thirteenth Doctor]]?
** Also, [[Series/GameOfThrones Cersei Lannister]] is a new teacher at St. Trinian's.
** And that poor, damaged inspector would go on to even more [[Series/HorribleHistories horrible things]] - and even [[Series/GhostsUK end up dead!]]
** Also, that Taylor the chav would wind up living up to her name and becoming a [[{{Pun}} tailor]] for [[Series/{{Bridgerton}} the rich and powerful families of Grosvenor Square]]!
* UnintentionallyUnsympathetic: The girls forcing Annabella to run naked and livestreaming it is a lot less of a harmless prank and more cruel and off-putting today, especially since they receive no comeuppance for it and she later befriends them.

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