The Youth Risk Behavior Surveillance System is an epidemiologic surveillance system that was established by the U.S. Centers for Disease Control and Prevention (CDC) to help monitor the prevalence of behaviors that not only influence youth health, but also put youth at risk for the most significant health and social problems that can occur during adolescence and adulthood. In the United States, 70.8 percent of all deaths among youth and young adults aged 10-24 years result from only four causes: motor-vehicle crashes (32.3 percent), other unintentional injuries (11.7 percent), homicides (15.1 percent), and suicides (11.7 percent). Substantial morbidity and social problems also result from the approximately 870,000 pregnancies that occur each year among females aged 15-19 years and the estimated 3 million cases of sexually transmitted diseases (STDs) that occur each year among persons aged 10-19 years. The purpose of the Youth Risk Behavior Survey (YRBS) is to assist educators and health professionals in determining the prevalence of the aforementioned health-risk behaviors among youth. This report describes the results of the survey and the methods used to conduct the survey. The results will be used to focus the continuing development of statewide comprehensive health education and to reduce those health behaviors that place Montana youth at risk. Appended are: (1) Frequency Distributions; (2) Referred Figures; and (3) Additional Charts. (Contains 15 figures, 20 charts, and a list of 11 resources.) [Prepared for the Montana Office of Public Instruction, Division of Health Enhancement, HIV/STD Education Program by Dodge Data Systems, Inc.]