Percentage of students in grades 9-12 who reported being threatened or injured with a weapon on school property during the previous 12 months, by sex: Various years, 1993-2005
NOTE: "On school property" was not defined for survey respondents.
Population size from the Digest of Education Statistics, 2005 (NCES 2006-
030) for students in grades 9–12 is 16,286,000 (projected) in 2005.
SOURCE: Centers for Disease Control and Prevention, National Center for
Chronic Disease Prevention and Health Promotion, Youth Risk Behavior
Surveillance System (YRBSS), 2005.