| Total | 7.3 | | 8.4 | | 7.4 | | 7.7 | | 8.9 | | 9.2 | | 7.9 | | 7.8 | |
| | | | | | | | | | | | | | | | | |
| Sex | | | | | | | | | | | | | | | | |
| Male | 9.2 | | 10.9 | | 10.2 | | 9.5 | | 11.5 | | 11.6 | | 9.7 | | 10.2 | |
| Female | 5.4 | | 5.8 | | 4.0 | | 5.8 | | 6.5 | | 6.5 | | 6.1 | | 5.4 | |
| | | | | | | | | | | | | | | | | |
| Race/ethnicity1 | | | | | | | | | | | | | | | | |
| White | 6.3 | | 7.0 | | 6.2 | | 6.6 | | 8.5 | | 7.8 | | 7.2 | | 6.9 | |
| Black | 11.2 | | 11.0 | | 9.9 | | 7.6 | | 9.3 | | 10.9 | | 8.1 | | 9.7 | |
| Hispanic | 8.6 | | 12.4 | | 9.0 | | 9.8 | | 8.9 | | 9.4 | | 9.8 | | 8.7 | |
| Asian | (2) | | (2) | | (2) | | 7.7 | | 11.3 | | 11.5 | | 4.6 | | 7.6 | ! |
| American Indian/Alaska Native | 11.7 | | 11.4 | ! | 12.5 | ! | 13.2 | ! | 15.2 | ! | 22.1 | | 9.8 | | 5.9 | |
| Pacific Islander/Native Hawaiian | (2) | | (2) | | (2) | | 15.6 | | 24.8 | | 16.3 | | 14.5 | ! | 8.1 | ! |
| More than one race | (2) | | (2) | | (2) | | 9.3 | | 10.3 | | 18.7 | | 10.7 | | 13.3 | |
| | | | | | | | | | | | | | | | | |
| Grade | | | | | | | | | | | | | | | | |
| 9th | 9.4 | | 9.6 | | 10.1 | | 10.5 | | 12.7 | | 12.1 | | 10.5 | | 9.2 | |
| 10th | 7.3 | | 9.6 | | 7.9 | | 8.2 | | 9.1 | | 9.2 | | 8.8 | | 8.4 | |
| 11th | 7.3 | | 7.7 | | 5.9 | | 6.1 | | 6.9 | | 7.3 | | 5.5 | | 6.8 | |
| 12th | 5.5 | | 6.7 | | 5.8 | | 5.1 | | 5.3 | | 6.3 | | 5.8 | | 6.3 | |
| | | | | | | | | | | | | | | | | |
| Urbanicity | | | | | | | | | | | | | | | | |
| Urban | — | | — | | 8.7 | | 8.0 | | 9.2 | | 10.6 | | — | | — | |
| Suburban | — | | — | | 7.0 | | 7.4 | | 9.0 | | 8.8 | | — | | — | |
| Rural | — | | — | | 5.6 | ! | 8.3 | | 8.1 | | 8.2 | | — | | — | |
| — Not available. |
| ! Interpret data with caution. |
| 1 Race categories exclude persons of Hispanic ethnicity. |
| 2 The response categories for race/ethnicity changed in 1999 making comparisons of some categories with earlier years problematic. In 1993, 1995, and 1997, Asian students and Pacific Islander students were not categorized separately and students were not given the option of choosing more than one race. |
| NOTE: "On school property" was not defined for survey respondents. |
| SOURCE: Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Youth Risk Behavior Surveillance System (YRBSS), various years, 1993–2007. |