Nelson McCormick had done extensive research into proms going as far back as where and when the first prom was ever held in American history in the film, compiling detailed portfolios for the cast and crew which had an introduction on the origin of the prom and what it represents. However writer Cardone when going over what would be the titular prom with McCormick ultimately decided on a prom which apart from the music and dancing of the Bridgeport seniors was beyond the scale or budget of a standard American prom.
Holds the distinction of being the first slasher film in the history of horror films to receive a PG-13 rating (When a Stranger Calls (2006) doesn't necessarily count as the killer doesn't use knives), an aspect of the film that was critically reviled by fans and critics alike.
The trivia items below may give away important plot points.
Body count: 13, including the flashback. 1. Father (flashback) 2. Brother (flashback) 3. Mother (flashback) 4. Maid 5. Claire 6. Michael 7. Bellhop 8. Lisa 9. Guy in Trunk 10. Nash 11. Bobby 12. Cop outside house 13. Killer