MTIS launches two new interschool competitions: The Hercules Fitness Challenge and The Slam Dunk Basketball Championship By Mark Twain IS 26 July 201326 July 2013 MTIS launches two new interschool competitions: The Hercules Fitness Challenge and The Slam Dunk Basketball Championship; as well as the What’s Your Rock Gemology Fashion Fair. Previous MTIS launches its Summer Academy Program 1 May 2013 Next MTIS offers the International Baccalaureate Exams in the November Session (in addition to the May Session) for the first time 15 November 2014