Associations Between Adolescents' Perceptions of Alcohol Norms and Alcohol Behaviors: Incorporating Within-School Variability.

Background: Social norm interventions have been implemented in schools to address concerns of alcohol use among high school students; however, research in this area has not incorporated measures of variability that may better reflect the complexity of social influences.

Purpose: To examine the association between perceived alcohol norms, the student and school-level variability of those norms, and alcohol use behaviors among high school students.

Methods: A sample of 25,824 students from 58 high schools completed an online self-report survey.