Lovers of free movies and Jack Black will be pleased, as they can catch a screening of School of Rock at Mission Marquee Plaza in celebration of the film’s 20th anniversary. The film will be screened on June 15 as part of the Mission Marquee’s Outdoor Family Film Series. While Jack Black is currently in the public consciousness for his performance as Bowser in The Super Mario Bros Movie, for many he will always be the eccentric rock guitarist and fake substitute teacher Dewey “Mr. S” Finn.