"Three little maids from school are we." Seen here on one of the picturesque shopping streets of this picturesque Austrian town. Where The Sound of Music was filmed. And where Mozart was born. Both events feature prominently in the tourist brochures, names of menu items and window displays of souvenir shops. I was a chaperone on this Eastertime student excursion from the New Jersey high school where I was teaching. The kids on the trip were alternately gaga about seeing a larger world and being allowed to drink without restriction.