Complex sentence: Three Harker students were named to the U.S.Team for International Physics Olympiad (IPhO) in 2004,2009 and 2014, respectively, and all won gold medals in 2004 in Republic of Korea, in 2009 in Mexico and in 2014 in Kazakhstan.
Split into simpler sentences: Three Harker students were named to the U.S.Team for International Physics Olympiad (IPhO) in 2004,2009 and 2014, respectively. They all won gold medals in 2004 in Republic of Korea, in 2009 in Mexico and in 2014 in Kazakhstan.