The data reported are from the 1993 National Household Education Survey, which is based upon the responses of 6,504 students in grades 6 through 12. The three types of incidents examined in the survey are considered for this report: bullying (repeated threats of harm), any kind of physical attack, and robbery (taking something directly by force or threat of force). Students were asked first whether they knew of each type of incident having happened at their school. A large majority of students in the sample reported having knowledge of bullying, physical attack, or robbery at their schools during the current school year. The greatest percentage of students (56 percent) reported that bullying had occurred in their schools, followed by physical attack (43 percent), and robbery (12 percent). At least one incident of bullying, physical attack, or robbery was witnessed by about half of all students (56 percent). Fear of threats or crime at school was low, however; 25 percent of students reported being worried about victimization at school. This report notes differences in reporting by school grade level, public and private schools, school size, school racial composition and student's race/ethnicity, and gender.