According to the Chicago Tribune, an original screenplay of The Breakfast Club was discovered in a filing cabinet during a local high school’s move to new offices. Maine Township High School District 207 staff were packing their offices at the school when the manuscript was discovered.

"'The Breakfast Club' dated Sept. 21, 1983," District 207 superintendent Ken Wallace told the Tribune. "It's a first draft of the screenplay by John Hughes.” He then added, "In the upper left, there is what appears to be pizza grease."

Hughes filmed the 1985 classic at the now-closed Maine North High School, where he gave a copy of the script to the superintendent.

If you’re not too familiar with the movie, here’s some good background via Esquire's Matt Patches:

“Regarded by many as a high point in Hughes' high school comedy run, The Breakfast Club starred Emilio Estevez, Anthony Michael Hall, Judd Nelson, Molly Ringwald, and Ally Sheedy as clique representatives forced together in the disciplinary equivalent of the G8 summit. Ruled over by Vice Principal Dick Vernon (Paul Gleason), the five kids peel back one another's layers to their raw selves, forging unlikely friendships and solidifying a place in 1980 pop culture nostalgia. The film celebrated its 30th anniversary this past February.”

While the manuscript is almost identical to the 30-year-old film, the Trib found a few key differences. Read their full story.