Teens getting anti-drug message OPINION.(Editorial)

Repetitive public-service announcements on television warning America's youth of the dangers presented by alcohol, tobacco and illegal drugs might seem like tedious statements of the obvious to some adults, and even some youngsters. But judging from a sustained decline in the use of those substances by the nation's teenagers in a survey of 8th-, 10th- and 12th-graders, those education campaigns are conveying an effective lesson.

The National Institute on Drug Abuse recently released a study, conducted for it by the University of Michigan, showing that the use of alcohol, cigarettes and illegal drugs in all three grades has declined over the past two years. As John …