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


Table 16.2.

Percentage of students in grades 9–12 who reported using marijuana during the previous 30 days, by location, number of times, and selected student characteristics: 2009


Student characteristic Anywhere     On school property  
0 times 1 or 2 times   3 to 39 times 40 or more times     0 times 1 or 2 times   3 to 39 times   40 or more times  
Total 79.2 7.2   9.7 3.8     95.4 2.1   1.8   0.7  
                             
Sex                            
Male 76.6 6.8   10.8 5.8     93.7 2.6   2.6   1.1  
Female 82.1 7.7   8.5 1.7     97.2 1.7   1.0   0.2  
                             
Race/ethnicity1                            
White 79.3 7.4   9.6 3.7     96.2 1.9   1.4   0.5  
Black 77.8 6.7   10.9 4.6     94.4 2.2   2.8   0.6 !
Hispanic 78.4 8.2   9.8 3.6     93.5 3.2   2.3   1.0  
Asian 92.5 3.0   3.3 1.2 !   98.0   1.1 !  
American Indian/Alaska Native 68.4 6.7 ! 19.6 5.3 !   97.1     #  
Pacific Islander/Native Hawaiian 75.2 5.0 ! 13.0 6.8 !   91.0 4.4 ! 3.7 !  
Two or more races 78.3 7.8   9.8 4.1 !   94.6 1.4 ! 2.2 ! 1.8 !
                             
Grade                            
9th 84.5 5.8   7.6 2.1     95.7 2.3   1.4   0.6  
10th 78.9 7.9   9.6 3.6     95.4 1.9   2.1   0.6  
11th 76.8 7.9   11.2 4.1     95.0 2.5   2.0   0.5  
12th 75.4 7.7   10.9 6.0     95.4 1.9   1.9   0.8  
# Rounds to zero.                            
! 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.  
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. Detail may not sum to totals because of rounding.  
SOURCE: Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Youth Risk Behavior Surveillance System (YRBSS), 2009.  
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