These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Ho Yay: Fern/Vylette really comes off as a Stalker with a Crush towards Liz Purr. She obsesses over her, describes her as perfection and spends all her class time gazing at the beauty marks on the back of Liz's neck.
Hollywood Homely: Proven by her in-story transformation, all that made Judy Greer a.k.a. Fern/Vylette ugly was hair that needed some grooming and some non-flattering clothes.
Idiot Plot: To quote RogerEbert: "Julie could end it all by speaking out, but she delays, because that would not be convenient for the plot." And the police officer who completely ignores the fact that a woman called the school and not some random male rapist. In defense to Julie, it would've been her word against Courtney, Marcie, and Fern/Vylette, and Julie didn't exactly have any evidence to prove Courtney was responsible.
Also, Courtney was a vicious little liar and manipulator . If Julie had gone to the police Courtney probably would've tried to spin the whole thing around and make it look like Julie killed Liz and threatened the others into compliance.
True Art Is Incomprehensible - For the kind of movie it is, there are some very surreal moments. Like the scene showing Fern's transformation into Vylette immediately.