Deadly school rampage shootings continue to plague society and inspire widespread fear, yet scant attention has been paid to averted incidents. Utilizing indepth interviews conducted with officials directly involved in averting potential school rampages, this book explores the processes by which threats are assessed and school rampage plots are averted. By examining these averted incidents, this work addresses problematic gaps in school violence scholarship and advances existing knowledge about mass murder, violence prevention, bystander intervention, threat assessment, and disciplinary policy in school contexts.