Ya, just go looking for a barback job (bartender assistant really). You get to learn ALOT more than you ever would at school ... plus you make some extra cash while you are learning. Eventually, if you are a decent person, they will ask you to become a bartender (it may take awhile).
Prepare yourself for staying up to 4am on weekend nights, after hour parties, breaking up fights, and crazy customers.
(It's worth it.)