 The Hutchinson Study of High School Smoking is a 2-arm group-randomized trial in adolescent smoking cessation, conducted by the Fred Hutchinson Cancer Research Center in partnership with 50 Washington State high schools. Twenty-five high schools are randomly assigned to the experimental intervention condition and 25 are assigned to the control no intervention condition. The trial uses innovative and rigorous trial design and methodology to address recruitment, retention, and other methodological challenges encountered in early adolescent cessation trials, to provide a rigorous test of in innovative proactive smoking cessation intervention. Participants are 2,151 high school students all smokers and a sample of nonsmokers identified via baseline survey of all enrolled students at the end of their junior year. 