This study assessed the effectiveness of a structured teaching program (STP) on knowledge of sexual health among adolescents. Researchers used a quasi-experimental design with a pre-test and post-test to measure knowledge scores in 60 adolescent students before and after the STP. Results showed the STP was highly effective, with post-test knowledge scores significantly increased from the pre-test. The study concluded STPs can be an effective way to improve adolescents' knowledge of sexual health.