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Indicators of School Crime and Safety: 2011
NCES 2012-002
February 2012

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Table 16.1.

Percentage of students in grades 9–12 who reported using marijuana at least one time during the previous 30 days, by location and selected student or school characteristics: Various years, 1993–2009


Student or school characteristic Anywhere   On school property  
1993 1995 1997 1999 2001 2003 2005   2007 2009   1993 1995   1997   1999 2001   2003   2005 2007   2009  
Total 17.7 25.3 26.2 26.7 23.9 22.4 20.2   19.7 20.8   5.6 8.8   7.0   7.2 5.4   5.8   4.5 4.5   4.6  
                                                     
Sex                                                    
Male 20.6 28.4 30.2 30.8 27.9 25.1 22.1   22.4 23.4   7.8 11.9   9.0   10.1 8.0   7.6   6.0 5.9   6.3  
Female 14.6 22.0 21.4 22.6 20.0 19.3 18.2   17.0 17.9   3.3 5.5   4.6   4.4 2.9   3.7   3.0 3.0   2.8  
                                                     
Race/ethnicity1                                                    
White 17.3 24.5 25.0 26.4 24.4 21.7 20.3   19.9 20.7   5.0 7.1   5.8   6.5 4.8   4.5   3.8 4.0   3.8  
Black 18.6 28.6 28.2 26.4 21.8 23.9 20.4   21.5 22.2   7.3 12.3   9.1   7.2 6.1   6.6   4.9 5.0   5.6  
Hispanic 19.4 27.8 28.6 28.2 24.6 23.8 23.0   18.5 21.6   7.5 12.9   10.4   10.7 7.4   8.2   7.7 5.4   6.5  
Asian 13.5 10.9 9.5 6.7   9.4 7.5       4.3 4.7 ! 4.3 ! 2.7 ! 2.0  
American Indian/Alaska Native 17.4 28.0 44.2 36.2 36.4 32.8 30.3   27.4 31.6   10.1 ! 16.2 ! 21.5 ! 11.4 ! 9.2 8.2   2.9 !
Pacific Islander/Native Hawaiian2 33.8 21.9 28.1 12.4 ! 28.7 24.8       11.0 6.4 ! 9.1 ! 13.4 ! 9.0  
Two or more races2 29.1 31.8 28.3 16.9   20.5 21.7       7.8 5.2   11.4 ! 3.6 3.6 ! 5.4  
                                                     
Grade                                                    
9th 13.2 20.9 23.6 21.7 19.4 18.5 17.4   14.7 15.5   4.4 8.7   8.1   6.6 5.5   6.6   5.0 4.0   4.3  
10th 16.5 25.5 25.0 27.8 24.8 22.0 20.2   19.3 21.1   6.5 9.8   6.4   7.6 5.8   5.2   4.6 4.8   4.6  
11th 18.4 27.6 29.3 26.7 25.8 24.1 21.0   21.4 23.2   6.5 8.6   7.9   7.0 5.1   5.6   4.1 4.1   5.0  
12th 22.0 26.2 26.6 31.5 26.9 25.8 22.8   25.1 24.6   5.1 8.0   5.7   7.3 4.9   5.0   4.1 5.1   4.6  
                                                     
Urbanicity3                                                    
Urban 26.8 27.5 25.6 23.4       8.0   8.5 6.8   6.8      
Suburban 27.0 26.1 22.5 22.8       7.0   6.4 4.7   6.0      
Rural 21.9 28.0 26.2 19.9       4.9 ! 8.1 5.3   3.9      
— Not available.  
! Interpret data with caution. The coefficient of variation (CV) for this estimate is 30 percent or greater.  
‡ Reporting standards not met. Either there are too few cases or the coefficient of variation (CV) is 50 percent or greater.  
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 two or more races.  
3 Refers to the Standard Metropolitan Statistical Area (MSA) status of the respondent’s household as defined in 2000 by the U.S. Census Bureau. Categories include “central city of an MSA (Urban),” “in MSA but not in central city (Suburban),” and “not MSA (Rural).”  
NOTE: “On school property” was not defined for survey respondents. The term “anywhere” was not used in the YRBS questionnaire; students were simply asked how many times during the past 30 days they used marijuana.  
SOURCE: Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Youth Risk Behavior Surveillance System (YRBSS), various years, 1993–2009.  
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