NEW YORK — Rockers, rejoice, and get ready for “The School of Rock” on Broadway.

Producers said Thursday that a musical version of the 2003 film will open next December. Composer Andrew Lloyd Webber and lyricist Glenn Slater will write new additional music.

The story about a rocker who poses as a substitute teacher at a tony prep school will be adapted by Julian Fellowes, who created “Downton Abbey,” as well as writing the stage musical of “Mary Poppins” and the film “Gosford Park.” It will be directed by Laurence Connor, who co-directed the latest “Les Miserables” on Broadway.