Sidwell Friends School is a highly selective Quaker private school located in Bethesda, Maryland and Washington, D.C., offering pre-kindergarten through secondary school classes. Founded in 1883 by Thomas Sidwell, its motto is "Eluceat omnibus lux" (English: Let the light shine out from all), alluding to the Quaker concept of inner light. All Sidwell Friends students attend Quaker meeting for worship weekly.