Complex sentence: He would then graduate in 1994 and move on to Rich South High School in Richton Park, IL, where he was a 3-sport athlete (Football, Wrestling, Track) and also participated in the band and on the chess team.
Split into simpler sentences: He would then graduate in 1994 and move on to Rich South High School in Richton Park, IL. Where he was a 3-sport athlete (Football, Wrestling, Track) and also participated in the band and on the chess team.