Randomized Controlled Trial of a Gender-transformative School-based Sexual Health Intervention

The investigators propose a mixed experimental design with a randomized controlled trial (RCT) that will evaluate the efficiency of an intervention and implementation of a comprehensive gender-transformative sexual education, along with qualitative studies to understand the implementation process. The results of the intervention will be evaluated after it finishes, and in a three-month follow-up. Each participant will be sent a link to the questionnaire (web-based survey). Follow-up contact will be done with WhatsApp or telephone calls. The hypothesis is that the intervention designed and implemented in the experimental group: (1) will increase their sexuality knowledge level; (2) will increase their preventive sexual behavior (or intentions); (3) will favor a gender-positive attitude; and (4) will decrease internalizing and externalizing problems in mental health. The secondary objective is to examine the implementation intervention process, that is, identify the strengths and obstacles in the real context in which the study intervention is performed, to understand the determinants and strategies of the success of the implementation.