 The intervention, delivered during the senior year of high school, consists of a series of counselor-initiated, individually-tailored telephone counseling calls. Incorporating both Motivational Interviewing and Cognitive Behavioral skills training, the counseling telephone calls aim to increase smokers motivation for quitting smoking, build skills for smoking cessation, and assist with relapse prevention. For nonsmokers, the telephone calls provide positive reinforcement of students abstinence choices and help build skills for supporting peers efforts to quit smoking. Complementary intervention components include an interactive cessationinformational Web site and school-based promotional materials cessation posters, school newspaper ads. 