For the 2014-2015 school year, 20.8 percent of students reported being bullied at school. This report examines these students' experiences of bullying by repetition and power imbalance, two components of the Center for Disease Control and Prevention's (CDC) uniform definition of bullying. The report reviews the association of these components with students' school work, relationships, physical health, and feelings about themselves. Data in this report are from version 1 of the 2015 School Crime Supplement (SCS) to the National Crime Victimization Survey (NCVS), a nationally representative sample survey of students ages 12 through 18.