An arts festival at Helen J. Stewart School, Las Vegas, Nevada, a public school for students with all ranges of mental retardation, features participatory workshops, performances, and a variety of other "arts happenings." The festival is an outgrowth of a creative arts curriculum which promotes art, music, dance, and drama. Planning is extensive and begins in September for the March event. (A detailed timetable is presented.) Sample letters and forms and information flyers are presented as well. (CL)