The present study was carried out in order to diagnose the level of knowledge about sexuality and reproductive health in secondary education teachers and its influence on the level of information in students of the Educational Institution Nuestra Señora de Guadalupe, Lima, Perú, of a quantitative nature with a hypothetical deductive approach, of applied type, causal-explanatory correlational of cross-sectional design, the technique used was the survey, with two questionnaires. The surveys were conducted during 2019 with 15 teachers who teach the course on personal development, citizenship and civics, then the questionnaire was applied to 243 students in the 3rd, 4th, and 5th year of secondary school about Knowledge of sexual education and reproductive health. Conclusion according to the results obtained that the students have a low level of information about sexuality and reproductive ...