Many of the health problems experienced by youth are caused by preventable behaviors, such as alcohol abuse and unprotected sexual intercourse. The increasing cost of health care demands that youth be taught to adopt and maintain healthy behaviors. School health programs are essential to attaining this goal. The results of the 1995 Idaho Youth Risk Behavior Survey are described in this report. It summarizes 2,726 high school students' responses taken from behavior questionnaires. The survey presents statistics on the following behaviors: seat belt use; motorcycle, bicycle, and motor vehicle safety; violence in schools; suicide; tobacco, alcohol, and other drug use; sexual behaviors; HIV education; dietary behaviors; and physical activity. Results show that the youth who participated in the survey have engaged in behaviors which put them at risk for many significant health and social problems. For example, nearly one third of all students responding had recently ridden in a car driven by someone else who had been drinking alcohol (motor vehicle crash injuries are the leading cause of death among youth ages 15 to 24 in the United States). Nearly one fourth of all students responding had seriously considered suicide (the second-leading cause of death among youth, aged 15-24, in Idaho is suicide). An 18-point "Healthy Schools Checklist" is included for use in evaluating the effectiveness of a school's health program. Contains 15 references. (RJM)