Complex sentence: Gainesville's predominately black high school, Lincoln High, was scheduled to close at the end of the 1969--70 academic year and its football coach, Jessie Heard, was named in 1969 to be the head coach at Buchholz for the 1970 season.
Split into simpler sentences: Gainesville's predominately black high school, Lincoln High, was scheduled to close at the end of the 1969--70 academic year. Its football coach, Jessie Heard, was named in 1969 to be the head coach at Buchholz for the 1970 season.