It's everywhere-at family birthdays and holiday parties, sporting events and at dinner tables across the country. Society's message is clear: Alcohol is safe, affordable and socially acceptable. Given its widespread use, it's not surprising that alcohol is the most popular drug among middle school and high school kids. Nearly three-quarters of U.S. high school seniors and more than one-third of eighth graders have consumed alcohol, according to the National Institute on Drug Abuse (NIDA). "Alcohol is killing more kids than illicit and legal drugs put together," says John Lieberman, director of operations at Visions Adolescent Treatment Centers in Southern California.