Loading view. There were no results found. There were no results found. Mercer Middle School Events Venues Mercer Middle School 42149 Greenstone Dr Stone Ridge, 20105 Get Directions (703) 957-4340 http://www.loudoun.k12.va.us/mercer 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