VESTAVIA HILLS, Ala. -- Breath mints won't cut it anymore for students who have been smoking in the bathroom -- some schools around the country are administering urine tests to teenagers to find out whether they have been using tobacco. Opponents say such testing violates students' rights and can keep them out of the extracurricular activities they need to stay on track. But some advocates say smoking in the boys' room is a ticket to more serious drug use.