Background: The increase in the prevalence of first-time smokers, especially children and adolescents, will continue to increase if there is no comprehensive policy, so reducing the prevalence rate is very difficult. Even though health and anti-smoking campaigns continue to be intensified, the number of first-time smokers in Indonesia is still increasing. Therefore, the role of the teacher and principal is very helpful in implementing Non-Smoking Areas (Kawasan Tanpa Rokok/KTR) in schools.

Method: This type of research is qualitative with a descriptive approach. This research focuses on the role of teachers in schools in implementing No-Smoking Areas and anticipating children not to smoke. The number of informants was 4 school principals and 1 Counseling Teacher (Bimbingan Penyuluhan/ BP) teacher from 7 schools from different levels of elementary to high school education and 2 key informants from the Head of the Jayapura City Education and Culture Office and the Head of the Jayapura City Health Office.

Results: This research can be illustrated that in general teachers and school principals are not aware of the KTR Regional Regulation No. 1 of 2015 which regulates the prohibition of smoking in schools. The involvement of teachers and school principals plays an important role in enforcing KTR in schools, and the application of smoking bans in schools is highly enforced even though they do not know about the KTR Regional Regulations but the prohibition is still enforced because it comes from religious prohibitions for religious and state schools because teachers generally do not smoke. In general, the teachers who became informants did not smoke, so the school was assisted with this. Indonesia has now increased Non Smoking Areas (Kawasan Tanpa Rokok/ KTR) Regional Regulation No. 1 of 2015 awareness based on in-depth review of qualitative research from four school principals, seven counselling teachers (BP teacher), as well as, theory, and current practice in the area of school-based tobacco-use prevention. Key informants participated: teachers from seven schools (grade 1 – grade 12), the Head of the Jayapura City Education, Cultural Office, as well as, the Head of the Jayapura City Health Office.