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Table 232.50. Percentage distribution of students in grades 9-12, by number of times they reported using marijuana anywere or on school property during the previous 30 days and selected student characteristics: 2011
[Standard errors appear in parentheses]
Student characteristic Anywhere (including on school property)1 On school property2
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
1 2 3 4 5 6 7 8 9
Total 76.9 (0.80) 7.4 (0.30) 10.9   (0.42) 4.8   (0.30) 94.1 (0.39) 2.8   (0.22) 2.3   (0.21) 0.7   (0.09)
                                           
Sex                                          
Male 74.1 (1.01) 7.1 (0.40) 11.8   (0.57) 7.0   (0.47) 92.5 (0.56) 3.1   (0.28) 3.2   (0.31) 1.2   (0.17)
Female 79.9 (0.95) 7.7 (0.48) 9.9   (0.56) 2.4   (0.26) 95.9 (0.32) 2.5   (0.21) 1.4   (0.19) 0.2   (0.04)
                                           
Race/ethnicity3                                          
White 78.3 (1.09) 6.9 (0.42) 10.2   (0.59) 4.6   (0.44) 95.5 (0.42) 2.2   (0.26) 1.9   (0.23) 0.4   (0.09)
Black 74.9 (1.35) 7.9 (0.69) 12.5   (0.81) 4.7   (0.63) 93.3 (0.77) 3.2   (0.43) 2.8   (0.52) 0.7   (0.18)
Hispanic 75.6 (1.27) 8.3 (0.59) 11.5   (0.67) 4.7   (0.46) 92.3 (0.54) 3.6   (0.26) 3.1   (0.40) 1.0   (0.21)
Asian 86.4 (3.75) (†) 5.5   (0.96) 3.2 ! (1.34) 95.5 (1.34) 2.4 ! (1.15)   (†) 1.5 ! (0.70)
Pacific Islander 68.9 (7.08) 11.3 (3.34) 13.2 ! (5.20) 6.6 ! (2.27) 87.5 (4.94) 5.6 ! (2.24)   (†)   (†)
American Indian/Alaska Native 52.6 (3.20) 10.5 (2.82) 23.6   (2.57) 13.2   (1.81) 79.1 (4.05) 8.6   (2.18) 9.8   (1.79) 2.5   (0.67)
Two or more races 73.2 (2.10) 7.2 (1.20) 12.9   (1.44) 6.7   (1.33) 91.9 (1.79) 3.7   (0.98) 2.4 ! (0.86) 2.0 ! (0.69)
                                           
Grade                                          
9th 82.0 (1.11) 6.2 (0.47) 8.2   (0.63) 3.6   (0.42) 94.6 (0.65) 2.7   (0.41) 2.2   (0.33) 0.5   (0.11)
10th 78.4 (1.15) 7.4 (0.60) 10.0   (0.65) 4.3   (0.50) 93.8 (0.63) 3.2   (0.38) 2.3   (0.40) 0.7   (0.16)
11th 74.5 (1.44) 8.0 (0.59) 12.9   (0.82) 4.5   (0.50) 93.8 (0.70) 3.2   (0.47) 2.3   (0.35) 0.7   (0.16)
12th 72.0 (1.08) 8.3 (0.59) 13.0   (0.69) 6.7   (0.53) 94.6 (0.39) 2.2   (0.30) 2.4   (0.30) 0.8   (0.18)
†Not applicable.
!Interpret data with caution. The coefficient of variation (CV) for this estimate is between 30 and 50 percent.
‡Reporting standards not met. Either there are too few cases for a reliable estimate or the coefficient of variation (CV) is 50 percent or greater.
1 The term "anywhere" is not used in the Youth Risk Behavior Survey (YRBS) questionnaire; students were simply asked how many times during the previous 30 days they had used marijuana.
2 In the question about using marijuana at school, "on school property" was not defined for survey respondents.
3 Race categories exclude persons of Hispanic ethnicity.
NOTE: Detail may not sum to totals because of rounding.
SOURCE: Centers for Disease Control and Prevention, Division of Adolescent and School Health, Youth Risk Behavior Surveillance System (YRBSS), 2011. (This table was prepared September 2013.)
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National Center for Education Statistics - http://nces.ed.gov
U.S. Department of Education