"This year we asked teens, 'Which is easiest to get: cigarettes, marijuana, beer or prescription drugs?' (prior to 2010, we asked, 'Which is easiest to buy?') Cigarettes remain at the top of the list, with 27 percent of teens saying cigarettes are easier to get than other drugs. Beer closely followed cigarettes as the easiest drug for teens to get. Marijuana is third, with 19 percent of teens reporting that it is easiest to get this year, compared to 22 percent last year. Compared to 2011, slightly more teens this year say prescription drugs are easier to get than other drugs (13 percent in 2012 vs. 10 percent in 2011)."

Source

QEV Analytics, LTD., "National Survey of American Attitudes on Substance Abuse XVII: Teens," The National Center on Addiction and Substance Abuse at Columbia University (New York, NY: National Center on Addiction and Substance Abuse at Columbia University, August 2012), p. 21.
http://www.casacolumbia.org/a…