Adolescents in the context of schoolchildren in the age range according to the World Health Organization (WHO) 10-19 years require intensive attention. The rise of sexual violence cases that occur sometimes makes teenagers do not dare to express the problem of sexual violence. We consider it necessary to strengthening gender understanding of the Sexual Violence Crime Law/ Undang-undang Tindak Pidana Kekerasan Seksual among student council students in Budi Luhur high school. With this activity, we hoped that students at Budi Luhur high school can prevent sexual violence. Although in the realm of high school (SMA), a task force not yet formed like in universities as an acceleration of the implementation of the Minister of Education and culture Regulation Number 30 of 2021 concerning the prevention and handling of sexual violence in the college environment. The activity method uses roleplay, pre-test, presentation of the material and post-test. It is expected that this service can be a means of increasing understanding related to gender issues, prevention of sexual violence in the school environment, thus the learning process runs well and comfortably.