From 2002 to 2007, there were decreases in the percentages of adolescents aged 12 to 17 reporting exposure to drug or alcohol use prevention messages through media sources (from 83.2 to 77.9 percent) and prevention programs outside of school (from 12.7 to 11.3 percent), but the percentage who had talked with their parents about the dangers of alcohol, drug, or tobacco use in the past year increased (from 58.1 to 59.6 percent)
   Combined data from 2002 to 2007 indicate that talking with a parent about the dangers of substance use decreased with age (61.6 percent of those aged 12 or 13, 59.5 percent of those aged 14 or 15, and 57.1 percent of those aged 16 or 17), whereas the percentage receiving prevention messages through media sources increased with age (77.0, 82.7, and 84.2 percent, respectively)
   In general, adolescents who reported having been exposed to substance use prevention messages in the past year were less likely than those who were not exposed to have used cigarettes, alcohol, and illicit drugs in the past month

Source:www.samhsa.gov