Polycystic ovarian syndrome (PCOS) is a common endocrine system disorder among women of reproductive age. Women with PCOS may have enlarged ovaries that contain small collections of fluid — called follicles — located in each ovary as seen during an ultrasound exam. The Prevalence of PCOS among adolescent girl in school is 9.13% to 36% ^[1]. PCOS is an endocrine disorder most often, symptoms first appear in adolescence, and around the start of menstruation polycystic ovarian syndrome is a condition in which a woman’s level of sex hormone estrogen and progesterone are out of balance ^[2]. This leads to growth of ovarian cyst (benign masses of the ovaries). PCOS can cause problems with a woman menstrual cycle fertility, cardiac function and appearance.

The present study aims is to evaluate the effectiveness of STP regarding causes and prevention of PCOS among adolescent girls and to find out the association between knowledge score regarding PCOS with selected demographic variable among the among adolescent girls at Govt. senior secondary school Nahan.