CREATE TABLE table_80168 ("School" TEXT, "Location" TEXT, "Mascot" TEXT, "County" TEXT, "Joined" TEXT, "Previous Conference" TEXT, "Left" TEXT, "Conference joined" TEXT)

Which conference held at School of whiting?
SELECT "Previous Conference" FROM table_80168 WHERE "School" = 'whiting'
SELECT "Previous Conference" FROM "table_80168" WHERE "School" = 'whiting'