This case study is about developing an intervention model to increase students’ knowledge on various aspects of sexual and reproductive health. The model consists of 12 modules covering topics, which include physical changes in one’s own body from a young age to puberty, sexuality, girl–boy relationships, abstinence, rape, pregnancy, and related laws and legislation. The modules were developed based on Strengths, Weaknesses, Opportunities, and Threats analysis of existing sexual and reproductive health education modules currently available in and outside of Malaysia. These modules were then tested by trained facilitators to students, aged 13 to 18, in selected secondary schools in Malaysia in the form of classroom activities which include slide presentation, games, songs, role-play, and group participation. Due to the differences in the time and class allocated by the schools, the modules implemented were selected to suit the ages of the students while ensuring that each student was exposed to at least three modules. The students were grouped into two age groups, namely, 15 years and younger and 16 years and older. To examine the impact of the intervention, the students were asked to answer 22 questions on sexual and reproductive health before the session began and answer the same questions immediately after the session ended. The difference in the proportion of participants with correct answers on sexual and reproductive health knowledge items before and after intervention was assessed using the McNemar test for dependent sample.