SELECT volleyball FROM table_16423070_4 WHERE basketball = "West Holmes" AND swimming = "Wooster" AND school_year = "2011-12"
Siapa yang memenangkan bola voli ketika Holmes Barat memenangkan bola basket dan Wooster menang berenang di 2011-12
CREATE TABLE table_16423070_4 (volleyball VARCHAR, school_year VARCHAR, basketball VARCHAR, swimming VARCHAR)