Loading view. There were no results found. There were no results found. Upper Merion Middle School Theater Events Venues Upper Merion Middle School Theater 450 Keebler Rd King of Prussia, PA 19406 United States Get Directions Events at this venue Today Upcoming Upcoming Select date. Previous Events Today Next Events Subscribe to calendar Google Calendar iCalendar Outlook 365 Outlook Live Export .ics file Export Outlook .ics file