The Montana Youth Risk Behavior Survey (YRBS) is administered by the Montana Office of Public Instruction every two years to students in grades 7 through 12. The purpose of the survey is 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. While all schools in Montana can participate in the survey on a volunteer basis, approximately 50 high schools are randomly selected to be included to provide the Montana statewide data to be used in other national YRBS reports. The 2011 YRBS was conducted in February 2011. Schools administering the survey were provided with detailed written instructions on conducting a random survey in their schools. According to the 2011 YRBS, seven percent of Montana high school students reported attempting suicide during the past 12 months. Six percent of males and seven percent of females had attempted suicide. Among Montana high school students who had attempted suicide, eight percent were ninth graders, six percent were tenth graders, seven percent were eleventh graders and five percent were twelfth grade students.