[['Atherton', 'LEFT', '1976'], ['[TABLECONTEXT]', '[TITLE]', 'Genesee County B League'], ['[TABLECONTEXT]', 'HIGH_SCHOOL', 'Atherton'], ['1976', 'LEAGUE_LEFT_TO', 'Mid-Eastern Eight Conference']]
Atherton High School left the Genesee County B League in 1976 to join the Mid-Eastern Eight Conference.