Daily Trivia: Three coaches remaining in AAAAAA field that attended the same high school

Three teams in the Class AAAAAA round of 16 are coached by graduates of one AAAAAA high school. Who are they? (Answer Monday)

Answer to Thursday's question: The four coaches of teams still in the playoffs who have won 200 games as a Georgia head coach are Alan Chadwick of Marist, Jeff Herron of Prince Avenue Christian, Rich McWhorter of Charlton County and Bruce Miller of Gainesville.