This report presents national-level estimates of bullying among students in grades 6–12 in U.S. public and private schools. The tables included in the report present detailed information on what bullying looks like, its effects on student health and academic performance, and related aspects of school crime and safety. Approximately 19 percent of students ages 12–18 in grades 6–12 reported being bullied during school, including 17 percent of males and 22 percent of females. Bullying was reported by approximately 26 percent of middle school students and by 16 percent of high school students. Approximately 20 percent of all students who were bullied reported negative effects on their schoolwork, and 44 percent reported notifying an adult of the bullying.