Baseline: 1234 eligible students (1983), 892 72%) screened and completed question- naires Age: 4 -6th grade (average age at baseline 10.5 yrs). Gender: 54% F Ethnicity: Not stated. Baseline smoking data: nonsmokers intervention 97.9%, control 96.3% but no separate data % for intervention and control; serum thiocyanate measure: intervention 40. 8; control 25.8 mu