I waffle over insisting that Mona Lisa Smile is Light Academia because nobody dies, but yeah it's still showing that academia has flaws such as a systematic adherence to stifling traditionalism.
Female-Narrative Dark Academia:
1. Legally Blonde 2001. It takes place at a university, and there is a murder. That qualifies it as Dark Academia—even more than Mona Lisa Smile, in which nobody even dies. (I am kidding about this one.)
1. Agora 2009. It's about the philosopher and mathematician Hypatia getting religious trauma from somebody else's religion when all she wants to do is study and teach and research. Asexual representation!
2. The Children's Hour 1961. Midcentury schoolmarmie aesthetic, and what I call "malicious compliance to the Hays Code" era of filmmaking—plus, Audrey Hepburn is in it.
3. The Moth Diaries 2011. In my opinion the book by Rachel Klein was very much better, but as far as aesthetics goes it's still a good movie: splendid neoclassical campus, cute uniforms, and a study in gothic literature that gets so intense that it bleeds into real life. What more do you want from a Dark Academia movie?
4. Picnic at Hanging Rock. The 1975 film had its own open-ended moodpiece charm, but I liked the 2018 miniseries very much better—even though all the backstory and side-story makes it look as though it's building up to a conclusion, it's not. There is no conclusion. Even the book it's all based on was meant to be an unanswered mystery (apparently there is an answer, "the eighteenth chapter" that was sometimes included, but I think it's too sci-fi, so probably the whole thing would be better if left a mystery. Just enjoy the group dynamics and the aesthetic.)
5. The Falling 2014. I did not love this movie, there should be a photosensitivity warning, as it built up I couldn't believe in the title premise even though I think I could sense what they were trying to get at thematically by it. I feel as though the big twist was from a juvenile need to shock. But it is academic, it's dark, and it has mostly girls.
6. Down A Dark Hall 2018. I didn't like this movie either. The pacing was off and the character motivations were haphazard. Maybe the book is better? The premise was good and I sensed the movie was shaping itself around a fairly solid plot.
7. Cracks 2009. I finally got around to watching this and, while the subject matter is extremely dark and heavy, I think it was the best movie in this whole list. The characters and relationship dynamics are well-written in the sense that it told me everybody's motivations in a way that I could believe. I think it was very realistic in showing the power imbalance and undue influence of the insecure, abusive teacher character. It avoided showing the student victims as victims who were flat characters—they are strongminded and flawed, and that coexists with the fact that they have less power in the relationship with their teacher. The campus is stately if worn-down, the cinematography is every-frame-a-painting tier, casting and acting was impeccable, this is a good movie...but I wouldn't re-watch it for fun. Personally that honor goes to Hanging Rock and Moth Diaries.
But there you go! Dark Academia Girlies.