Health behaviors during adolescence set the stage for behaviors and health into adulthood. In 2015, 41% of high school students in the US had ever had sexual intercourse, but in Alabama that percentage was even higher at 46.3%. In the US 30% were currently sexually active, and in Alabama that percentage was higher at 34.9%. Among currently sexually active students in the US, 43% did not use a condom, and in Alabama 49.1% did not use a condom. In 2015, young people aged 13-24 accounted for an estimated 22% of all new HIV diagnoses in the United States. In Alabama, young people in the same age group accounted for an estimated 29.1% of new HIV diagnoses. While nationwide half of the nearly 20 million new STDs reported each year were among young people aged 15-24, in Alabama the percentage for the same age group was 68.2%. Public schools in Alabama have direct contact with over 750,000 students for at least 6 hours each day over 13 key years of their social, physical, and intellectual development. Schools can help understand and prevent adolescent risk for HIV, STD and teen pregnancy. The Alabama State Department of Education (ALSDE) will conduct school-based surveillance of health risk behaviors and school health policies and practices. Recognizing that schools play an important role in HIV/STD prevention, schools can influence students? risk for HIV infection and other STD through parental engagement, health education, connection to physical and mental health services, and connecting youth to each other and important adults. By identifying priority schools and systems, an approach can be implemented and tested prior to taking activities to scale throughout the state. As a result of the proposed project, the expected outcome is an increased understanding of youth risk behaviors and school health policies and practices by education and public health agencies.