The School was a learning institution for the children living on Deep Space 9. The school was started by Keiko O'Brien shortly after the Federation took control of the station in 2369, and was open until 2371. Nog also attended the school from time to time, even though his father would object to a human run school at times. (DS9 episodes: "A Man Alone", "The Nagus") A few weeks after opening the school, Keiko left for Earth to visit family still living there. During this time her husband Miles O'Brien served as the substitute teacher. (DS9 episode: "The Nagus")