Background and objective: Sound- and print-based materials have been developed to promote environmental to-bacco smoke avoidance in junior high school students. This study was conducted to determine whether stu-dents' attitudes and selection of impressive educational topics varied according to the number of family smokers. Method: The education was provided at two Yotsukaido municipal junior high schools. The education was clas-sified into 10 different topics, and each topic was taught for 10 minutes. Each topic included sound- and print-based educational materials, a follow-up quiz, and an essay. After all education sessions, seventh and eighth grade students completed a questionnaire about overall comprehensibility of broadcasted explanations and printed materials, the length and difficulty level of the follow-up quiz, how often they read the es-says, the most impressive topics, and the number of family smokers. Results: Of 825 students, 723 (87.6%) responded to the questionnaire. The number of students with 0, 1, and 2 or more family smokers was 365, 249, and 109, respectively. The number of family smokers was correlated with feelings that the length/difficulty of the follow-up quiz was long/high as well as with a lower fre-quency of reading the essay. Of the 10 topics taught, a mean of 4.1 (95% confidence interval 3.9 - 4.3) were selected as impressive topics; this did not differ by the number of family smokers. “Active smoking,” “nicotine dependence,” and “tips for quitting smoking” were more likely to be selected as impressive topics as the number of family smokers increased. The “strategy of the tobacco company” was selected as a most im-pressive topic in students without family smokers compared with other groups. More than half of the students selected “effect of environmental tobacco smoke on children” and the “reason tobacco products are sold” as impressive topics regardless of the number of family smokers. Conclusions: These results suggest that attitudes toward educational materials and selection of impressive topics differ among students according to the number of family smokers. Students' education on smoking should take this finding into account to achieve the most effective approach for environmental tobacco smoke avoidance.