| — Not available. |
| 1 Includes schools that reported the activity happens either at least once a week or daily. |
| 2 Prior to the 2007–08 survey administration, the questionnaire wording was "student racial tensions." |
3 In the 2009–10 survey administration the questionnaire item "Student harassment of other students based on sexual orientation or gender identity " was added.
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| 4 Prior to the 2007–08 survey administration, the questionnaire did not specify "other than verbal abuse." Caution should be used when making direct comparisons with earlier survey years. |
| 5 Includes schools that reported the activity happens at all at their school during the school year. In the 1999–2000 survey administration, the questionnaire specified "undesirable" gang activities and "undesirable" cult or extremist group activities. |
| NOTE: Responses were provided by the principal or the person most knowledgeable about crime and safety issues at the school. "At school" was defined for respondents to include activities that happen in school buildings, on school grounds, on school buses, and at places that hold school-sponsored events or activities. Respondents were instructed to respond for only those times that were during normal school hours or when school activities or events were in session, unless the survey specified otherwise. |
| SOURCE: U.S. Department of Education, National Center for Education Statistics, 1999–2000, 2003–04, 2005–06, 2007–08, and 2009–10 School Survey on Crime and Safety (SSOCS), 2000, 2004, 2006, 2008, and 2010. |