B school can stand for "business school" or bride school.
Business school is where students obtain MBA's in the hopes of high paying jobs for dot.coms, where they will cash out their stock at age 35 and retire to Palm Beach. Oh yeah.
Bride School, or the School for Etiquette and Wisdom is where Korean gals go to learn how to be submissive, never giving orders to the husband, and not walking around in strapless mules that clack and disturb their elders. See h school for the male equivalent of bride school.
Part of the prenuptual agreement was that Karen attend Bride School and learn to bake pies, make sweaters and how to gracefully open and deliver a cold one while looking demur and sexy.