Background: Adolescents' reproductive health in Indonesia is of growing concern today. Premarital sexual
intercourse and unsafe sex behaviors widely found among young people. Lack of reproductive health
knowledge was common as the major cause of such risky behavior.
Objective: This study aims to measure level of adolescents' reproductive health knowledge as well as to
examine factors related to adolescents' knowledge.
Methode: It was across-sectional survey involved 320 secondary school students in Semarang. Semi-school
based self-administered questionnaires were employed to collect information on reproductive health and
sexual-related knowledge of adolescents.
Result: Sixty percent of adolescents had low reproductive health knowledge. Most of them believed
urinating after intercourse and withdraw before ejaculation would prevent them from pregnancy. Some also
believe that having sexual intercourse at the first time will not result in pregnancy. Peer and media were
found as the primary source of information on reproductive health.
Conclusion: This study indicates low level of knowledge among secondary school students in urban
Semarang. Therefore providing sex education at schools will be a good solution in order to increase level of
knowledge and prevent them from engaging in risky sexual practice.