ABSTRACT The Department of Education, Zambales Division is also adopting anti-smoking measures in accordance with the above Deped guidelines and rules. Consequently, this study would assess the extent to which smoking ban was implemented among senior high school. The study utilizes descriptive research design where survey checklist was the main instrument to gather data. The study was conducted in Zone 2, Division of Zambales which consisted of municipalities of Palauig, Iba and Botolan. The study used simple random sampling. There are five hundred twenty seven (527) senior high school students from different municipalities have served as respondents. The instrument was validated by three experts and treated through reliability testing. There are two parts of the instrument, (a) demographic profile of the respondents; (b) perception of the student-respondents towards extent of smoking ban implementation. Based from the results, therefore it conclude that the student-respondents assessed “Implemented” on the level of smoking ban implementation as to school policies and intervention, teachers’ participation and students’ participation respectively; that there is significant difference when grouped according all profile variables except for gender as to school policies and intervention and students’ participation; and that there is no significant differences on the assessment towards dimensions on the level of extent of implementation of smoking ban as to school policies and intervention, teachers and student participation respectively.