By Adam Markovitz
Updated February 18, 2010 at 10:36 AM EST

After striking gold with the High School Musical franchise, Disney is developing Prom, a big-screen comedy about a group of high schoolers getting ready for an all-important school dance, reports Variety. In an effort to keep costs at a minimum, the pic — which is already being touted as a potential franchise — may star a cast of unknowns.