The term "adolescents" refers to people between the ages of 10 and 19. Adolescents go through three distinct development phases: early adolescence (10–13 years), middle adolescence (14–16 years), and late adolescence (17-19). There seem to be 105 million teenage females in India, according to estimates. Menstruation is a phenomenon that only affects women. Menstruation and menstruation hygiene habits continue to be tainted by social and cultural taboos, which may have a negative impact on one's health. The study's primary objective was to assess the impact of a structured teaching program (STP) on teenage girls' understanding of menstrual hygiene in a sample of Jaipur municipal schools. Methodology The study used a quantitative research strategy as its research methodology. Pre-experimental, one-group, pre-test, post-test study design was used. The Bright Future Ssce School, located in D-Block Karnataka Nagar, Gautam Marg, Najaf Road, Jaipur Raj, was the site of the research. Purposive sampling was the method that was employed to choose the participants. The sample included 200 teenage females. Result: The mean pre-test score was 10.5 overall, whereas the mean post-test score was 14.56, with a mean difference of 4.06. The median pre-test score was 10, while the median post-test score was 14, with the pre-standard test's deviation being 1.51 and the post-standard test's deviation being 3.35. On 199 degrees of freedom, the estimated value of t is 20.66 there at 0.05 level of significance, whereas the tabulated value of t is 1.96. It implies that the organized education program on menstrual hygiene is successful in enhancing the understanding of teenage females. Conclusion: The results of the study demonstrated that the researcher's organized training program was successful in improving teenage girls' awareness of menstrual hygiene