"In 2016, 71.8 percent of youths aged 12 to 17 who were enrolled in school in the past year reported having seen or heard drug or alcohol use prevention messages at school (Figure 10). This percentage was lower than the percentages in 2002 to 2013, but it was similar to the percentages in 2014 and 2015. In 2002, for example, 78.8 percent of adolescents who were enrolled in school reported exposure to substance use prevention messages at school.

"In 2016, 72.7 percent of youths aged 12 to 17 reported having seen or heard drug or alcohol use prevention messages in the past year from sources outside of school, such as posters, pamphlets, the radio, or television (Figure 10). The percentage in 2016 was lower than the percentages in 2002 to 2012, but it was similar to the percentages in 2013 to 2015."

Source

Lipari, R. N., Ahrnsbrak, R. D., Pemberton, M. R., & Porter, J. D. (2017, September). Risk and protective factors and estimates of substance use initiation: Results from the 2016 National Survey on Drug Use and Health. NSDUH Data Review.