Latar Belakang: Masa remaja merupakan masa transisi yang ditandai oleh adanya perubahan fisik, emosi, dan psikis. Salah satu gangguan yang paling sering terjadi saat menstruasi adalah dismenore. Tujuan Penelitian: mengetahui pengaruh metode small group discussion class terhadap pengetahuan remaja putri tentang dismenorea di SMP Negeri 1 Kuta. Metode Penelitian: Penelitian ini merupakan penelitian kuantitatif, design quasi eksperimen dengan menggunakan one group pretest posttest design. Populasi pada penelitian ini adalah seluruh remaja putri di kelas VII SMP Negeri 1 Kuta yang memenuhi kriteria inklusi dan eksklusi, dengan jumlah sampel sebesar 20 orang. Teknik pengambilan sampel dengan purposive sampling serta dilakukan analisis data dengan wilcoxon sign rank test. Instrumen pada penelitian ini menggunakan kuesioner. Hasil Penelitian: Hasil penelitian menujukkan tingkat pengetahuan remaja putri sebelum dilakukan metode small group discussion sebesar (65%), setelah diberikan metode small group discussion menjadi (75%). Ada pengaruh metode small group discussion class terhadap pengetahuan remaja putri tentang dismenorea dengan nilai (p-value 0,001 < 0,05). Simpulan: Ada pengaruh metode small group discussion class terhadap pengetahuan remaja putri tentang dismenorea. Diharapkan pada penelitian ini bisa meningkatkan pengetahuan remaja tentang disminore. Kata Kunci : remaja, small group discussion class, pengetahuan

Background. The teenager is a transitional stage marked by physical, emotional, and psychological changes. One of the most common menstrual disorders experienced during this period is dysmenorrhea. Objective. The purpose of this study was to determine the effect of the small group discussion class method on the knowledge of teenage girls about dysmenorrhea at Junior High School 1 Kuta. Method. This study employed a quantitative quasi-experimental design using a one-group pretest-posttest approach. The population consisted of all seventh-grade teenage girls at Junior High School 1 Kuta who met the inclusion and exclusion criteria. In this study, 20 respondents were recruited as a sample through purposive sampling. Data were collected using a structured questionnaire and analysed using the Wilcoxon Signed Rank Test. Results. Findings indicated that 65% of respondents had adequate knowledge about dysmenorrhea before the intervention. After the small group discussion class, the percentage increased to 75%. Statistical analysis showed a significant effect of the small group discussion method on knowledge improvement (p-value = 0.001 < 0.05). Conclusion. The small group discussion class method significantly improves teenage girls’ knowledge about dysmenorrhea. This approach is recommended to enhance menstrual health education among teenagers. Keywords: Teenagers; Small Group Discussion Class; Knowledge; Dysmenorrhea