3. Test the effect of the intervention on other substance-related outcomes. We hypothesize that the intervention will result in similar reductions in alcohol use, as measured by the TLFB, and in driving/riding while impaired (DRWI) risks as measured by the score of a 4-item self-reported scale. Other outcomes of interest include readiness to change, school performance, and experience of other harmful consequences of substance use and associated risk behaviors.