Participants Baseline: 2719 (intervention 6410 (control). Age: 11 17 years (grades 7-10). Gender: 48% M (intervention), 52% M (control). Ethnicity: Not stated. Baseline smoking data: Rates of smokingover previous 12m at outset. Health programme 9.7%, fitness programme 9.5%, social skills 12.5%, control 14.4%