* CreatorBacklash: Though Writer/Director Ron Oliver enjoyed working with the cast, he later wished that he'd chosen more age appropriate actors to portray the high school students.
* KeepCirculatingTheTapes: The 2003 U.S. DVD release from Artisan (a double feature with part 4) contains the television edit, with alternate camera angles/takes and poorly dubbed-out profanity. The original edit is not legally available in the United States apart from the initial VHS release. Echo Bridge even released a triple feature DVD of the original ''Prom Night'', ''Hello Mary Lou: Prom Night II'' and ''Prom Night IV: Deliver Us From Evil'', skipping right over this film. This is also the only entry of the original series to not be available for streaming on Amazon Prime. It's possible the film is currently suffering from unspecified legal issues, and might even be in the same legal nightmare as ''[[Film/FrightNight1985 Fright Night Part II]]'', which had the same producer.
** The Canadian and Australian [=DVDs=] are currently the only English releases of the original cut on disc (the German release also has it, but only with German audio). The U.K. box set utilized the TV cut as well.
* TheOtherDarrin: Courtney Taylor replaces Lisa Schrage as Mary Lou. Schrage says she was never contacted about reprising the role.
* TroubledProduction: Considering the film's low budget and pressure to get things finished as quickly and cheaply as possible, there were numerous issues the cast and crew encountered during production:
** Producer Jose Menendez was [[https://en.wikipedia.org/wiki/Lyle_and_Erik_Menendez murdered by his two sons]] right as production was beginning, putting filming on hold for a couple weeks.
** Al Magliochetti, who did visual effects work on the film through VFX company Light and Motion, recalled numerous instances of a tense and confusing on-set atmosphere. For example, [[HostilityOnTheSet he did not get along]] with producer, co-director Peter Simpson, labeling him an uncivilized thug and one of the nastiest producers he'd ever worked with. He described one instance where Simpson reduced actress Courtney Taylor (Mary Lou) to tears after making a crude comment about her chest. He also said Taylor seemed embarrassed by how skimpy many of her costumes were.
** Editor Nick Rotundo was also the cause of much tension, as Magliochetti recalled that Rotundo would often try to override the wishes of director Ron Oliver and the VFX department, simply doing whatever he wanted with the picture. After Oliver exploded at Magliochetti over an unauthorized change, he simply showed Oliver the instructions Rotundo had given him, causing Oliver to realize the source of the problem.
* YouLookFamiliar: Brock Simpson, who played Josh in the [[Film/HelloMaryLouPromNightII previous film]] (and young Nick in [[Film/PromNight1980 the original]]), appears as Larry the Cop.