Report on preventing school violence: Creating a school climate in which students believe that staff members want to hear about threats or possible attacks is critical to preventing school violence, according to a report issued by McLean Hospital, the U.S. Secret Service, and the U.S. Department of Education. The 15-page report, Prior Knowledge of Potential School-Based Violence: Information Students Learn May Prevent a Targeted Attack, summarizes findings from interviews with 15 bystanders—that is, people who had prior knowledge of school violence. The interviews sought to determine how bystanders made decisions regarding what steps, if any, to take after learning the information. Six of the bystanders had prior knowledge and chose to tell an adult. Nine had prior knowledge and chose not to tell. Bystanders who felt that there were trustworthy adults in the school community who would take them seriously and with whom they had a prior helpful relationship were inclined to come forward. In schools without a collegial environment, bystanders chose to remain silent, and in every case a school shooting occurred. The primary reason for students' failure to come forward was an anticipated negative response (for example, "getting in trouble" or "getting interrogated by teachers"). The report encourages schools to educate staff to be open with students and to create trusting bonds in a climate of mutual respect, not fear. School districts should also develop policies on reporting threats and provide several options for reporting, including doing so anonymously, and ensure that those who report will be treated with respect and the information closely guarded. The full report is available on the McLean Hospital Web site at www.mclean.harvard.edu.