May 16, 2015 (El Cajon )--Upstart Theatre Company is proud to present its inaugural production, William Shakespeare's Twelfth Night, hosted by the Valhalla Theatre Arts Department on June 4 and 5. Upstart, founded in 2015, is comprised of and run entirely by students from schools throughout the Grossmont Union High School District, dedicated to keeping classical works of theatre alive on the modern educational stage.