The same high school was used for Grease and Buffy the Vampire Slayer.
John Marshall High School in Los Angeles, CA has actually appeared on screen many times throughout the decades. It’s been used in television shows like Boy Meets World, Hannah Montana, Who’s the Boss, The Wonder Years, Boston Public, and Sister, Sister. It was used for the Buffy the Vampire Slayer film, as well as Raiders of the Lost Ark, Transformers, School of Rock, A Nightmare on Elm Street, and Pretty in Pink. The ending sequence for the film Grease was shot on the football field, their basketball court was used in Space Jam, and their library was used for Van Halen’s “Hot for Teacher” music video.