The Partnership for a Drug-Free America says the number of teens in grades 9 through 12 who reported drinking alcohol in the last month rose 11 percent last year. The overall percentage climbed from 35 percent to 39.
Also, the survey found that the percentage of teenagers who reported smoking marijuana in the last month rose last year to 25 percent. The previous reading was 19 percent.
Sean Clarkin of The Partnership for a Drug-Free America finds the survey troubling. He says historically, there's an increase in recreational drugs before increases in some of the harder drugs.
Use of the party drug Ecstasy also rose last year, to six percent.
The Partnership's "attitude tracking" study was sponsored by MetLife Foundation. Researchers surveyed 3,287 teens in grades 9 through 12. Data were collected from questionnaires that teens filled out anonymously from March to June 2009. The study has a margin of error of plus or minus 2.3 percentage points.