TY - JOUR AB - Purpose This study explored the effectiveness of sex education lessons developed for six graders by the local community and experts.Design/methodology/approach Three lesson plans were developed based on a focus group discussion with students, parents, and teachers and then revised based on experts' feedback. The finalized three lessons were taught to 102 sixth graders in three different primary schools. Pre-test and post-test the students' sex education understanding was measured, and a 5-point Likert scale questionnaire was used to measure overall sexual attitude and awareness. The participants engaged in a semi-structured interview after each lesson, supplemented with researchers' notes. Descriptive statistics and t-tests, and the comparative method were used to analyze quantitative and qualitative data, respectively.Findings The sex education knowledge of participants at the three schools improved significantly (p < 0.01) after completing the learning units. Students also expressed satisfaction with the media, activities, and discussions during these sex education classes. The created learning units improved students' sexual attitude and awareness.Research limitations/implications Further long-term follow-up studies are needed to determine if there is retention of knowledge, attitudes, and awareness.Practical implications There should be more sex education programs at the earlier primary school level, especially in risky regions. Compulsory sex education curriculum in primary schools needs to be adjusted for each school by using a constructivist approach.Originality/value This study is unique because it was designed to better fit a specific school’s context and the contents were adapted to be taught by a teacher with minimal training required. VL - 34 IS - 3 SN - 2586-940X DO - 10.1108/JHR-02-2019-0039 UR - https://doi.org/10.1108/JHR-02-2019-0039 AU - Chaiwongroj Chanonya AU - Buaraphan Khajornsak PY - 2020 Y1 - 2020/01/01 TI - Development and effectiveness assessment of a sex education learning unit for Thai primary students T2 - Journal of Health Research PB - Emerald Publishing Limited SP - 183 EP - 193 Y2 - 2024/03/28 ER -