Complex sentence: The school's marching band was Tournament of Bands Chapter One Champions in 1979 (Group 2), 1980 and 1984 (Group 3) and 1989 (Group 1) and Group two state champions in 2005 and 2006, and group one tri-state champions in 2008.
Split into simpler sentences: The school's marching band was Tournament of Bands Chapter One Champions in 1979 (Group 2), 1980 and 1984 (Group 3) and 1989 (Group 1). The marching band was state champions in 2005 and 2006, and tri-state champions in 2008.