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Table 194. Percentage of students in grades 9 through 12 who reported experience with drugs and violence on school property, by race/ethnicity, grade, and sex: Selected years, 1997 through 2011
[Standard errors appear in parentheses]
Type of violence or drug-related behavior, and sex 1997 total 2005 total 2009 total 2011
Total Race/ethnicity Grade
White Black Hispanic Asian Native Hawaiian/
Pacific Islander

American Indian/
Alaska Native
Two or more races 9th 10th 11th 12th
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Felt too unsafe to go to
     school1 
4.0 (0.6) 6.0 (0.61) 5.0 (0.34) 5.9 (0.44) 4.4 (0.43) 6.7   (0.80) 9.1   (0.72) 6.2   (1.00) 7.6 ! (2.52) 8.8   (1.82) 7.2   (1.28) 5.8   (0.62) 6.8   (0.73) 5.2   (0.55) 5.5   (0.56)
Male 4.1 (0.8) 5.7 (0.56) 4.6 (0.43) 5.9 (0.47) 4.0 (0.45) 8.0   (0.91) 8.5   (1.01) 7.8   (1.54)   (†) 9.0   (1.98) 6.2 ! (1.99) 5.4   (0.64) 6.4   (0.93) 5.3   (0.65) 5.9   (0.72)
Female 3.9 (0.7) 6.3 (0.77) 5.3 (0.38) 6.0 (0.54) 4.8 (0.56) 5.3   (1.05) 9.6   (1.02) 4.3 ! (1.79)   (†) 8.5   (2.22) 8.1   (1.76) 6.3   (0.81) 7.1   (0.89) 5.1   (0.73) 5.2   (0.77)
                                                                                 
Carried a weapon on school
     property1,2 
8.5 (1.5) 6.5 (0.46) 5.6 (0.32) 5.4 (0.35) 5.1 (0.40) 4.6   (0.67) 5.8   (0.70) 4.3 ! (1.66) 10.9 ! (3.73) 7.6   (1.62) 7.5   (1.87) 4.8   (0.50) 6.1   (0.72) 4.7   (0.44) 5.6   (0.51)
Male 12.5 (2.9) 10.2 (0.82) 8.0 (0.52) 8.2 (0.59) 7.8 (0.68) 6.7   (1.07) 8.8   (1.23) 7.8 ! (3.09)   (†) 10.5   (1.59) 12.0   (3.35) 7.4   (0.95) 9.4   (1.27) 7.5   (0.71) 8.2   (0.95)
Female 3.7 (0.7) 2.6 (0.31) 2.9 (0.24) 2.3 (0.19) 2.3 (0.24) 2.5   (0.54) 2.6   (0.48)   (†)   (†)   (†) 3.0 ! (0.91) 2.1   (0.36) 2.5   (0.41) 1.8   (0.33) 2.8   (0.45)
                                                                                 
Threatened or injured with
     a weapon on school
     property3 
7.4 (0.9) 7.9 (0.36) 7.7 (0.37) 7.4 (0.31) 6.2 (0.35) 8.9   (0.64) 9.2   (0.81) 7.0   (0.99) 11.3   (3.23) 8.2   (1.52) 9.9   (1.35) 8.3   (0.63) 7.7   (0.58) 7.3   (0.61) 5.9   (0.45)
Male 10.2 (1.4) 9.7 (0.41) 9.6 (0.59) 9.5 (0.39) 8.0 (0.40) 11.2   (1.34) 12.1   (1.28) 8.0   (1.34)   (†) 9.7   (1.79) 11.3   (2.29) 10.3   (0.87) 9.7   (0.87) 9.2   (0.90) 8.3   (0.68)
Female 4.0 (0.6) 6.1 (0.41) 5.5 (0.37) 5.2 (0.37) 4.2 (0.48) 6.6   (0.88) 6.0   (0.61) 5.8 ! (2.12)   (†) 6.6   (1.62) 8.5   (1.83) 6.2   (0.69) 5.3   (0.63) 5.3   (0.62) 3.4   (0.57)
                                                                                 
Engaged in a physical fight
     on school property3 
14.8 (1.3) 13.6 (0.56) 11.1 (0.54) 12.0 (0.39) 9.9 (0.51) 16.4   (0.89) 14.4   (0.79) 6.2   (1.06) 20.9   (4.41) 12.0   (1.77) 16.6   (1.41) 16.2   (0.77) 12.8   (0.86) 9.2   (0.55) 8.8   (0.69)
Male 20.0 (2.0) 18.2 (0.92) 15.1 (1.05) 16.0 (0.58) 13.8 (0.80) 19.6   (1.33) 19.4   (1.01) 10.0   (1.88)   (†) 16.0   (3.70) 19.0   (2.84) 21.7   (1.21) 17.0   (1.23) 12.3   (0.97) 11.5   (1.21)
Female 8.6 (1.5) 8.8 (0.51) 6.7 (0.42) 7.8 (0.43) 5.6 (0.54) 13.1   (1.29) 9.0   (0.69)   (†)   (†) 7.7   (1.60) 14.4   (2.02) 10.4   (0.82) 8.0   (0.92) 6.0   (0.75) 6.1   (0.69)
                                                                                 
Cigarette use on school
     property1 
14.6 (1.5) 6.8 (0.41) 5.1 (0.31) 4.9 (0.25) 5.4 (0.41) 3.0   (0.55) 4.4   (0.44) 2.0 ! (0.80) 9.8 ! (3.89) 8.4   (1.48) 6.7   (1.27) 2.8   (0.33) 4.4   (0.49) 6.0   (0.55) 6.6   (0.56)
Male 15.9 (1.7) 7.4 (0.41) 6.2 (0.48) 5.7 (0.38) 5.8 (0.59) 4.3   (0.72) 5.5   (0.63) 3.0 ! (1.34)   (†) 9.4   (1.62) 8.0   (2.06) 3.4   (0.49) 4.6   (0.71) 6.7   (1.01) 8.5   (0.70)
Female 13.0 (2.2) 6.2 (0.61) 4.0 (0.32) 4.1 (0.34) 5.0 (0.54) 1.8 ! (0.72) 3.1   (0.48)   (†)   (†) 7.4 ! (2.98) 5.5   (1.31) 2.2   (0.38) 4.2   (0.61) 5.2   (0.70) 4.7   (0.94)
                                                                                 
Smokeless tobacco use on
     school property4 
5.1 (1.4) 5.0 (0.61) 5.5 (0.59) 4.8 (0.46) 5.6 (0.64) 2.0   (0.44) 3.7   (0.54) 3.9 ! (1.32) 8.2 ! (2.76) 9.7   (1.25) 5.9 ! (2.09) 3.8   (0.66) 4.5   (0.57) 5.0   (0.57) 5.7   (0.64)
Male 9.0 (2.5) 9.2 (1.12) 9.4 (1.16) 8.4 (0.84) 10.1 (1.24) 3.5   (0.77) 5.7   (0.77) 7.2 ! (2.43)   (†) 15.4   (1.87) 11.0 ! (4.00) 6.4   (1.21) 7.8   (1.00) 9.1   (1.06) 10.5   (1.20)
Female (†) 0.8 (0.15) 1.1 (0.16) 0.9 (0.15) 0.8 (0.20)   (†) 1.5 ! (0.53) #   (†)   (†) 3.5 ! (1.39)   (†) 0.9 ! (0.33) 1.0 ! (0.32) 0.8 ! (0.31) 0.7 ! (0.31)
                                                                                 
Alcohol use on school
     property1 
5.6 (0.7) 4.3 (0.31) 4.5 (0.29) 5.1 (0.33) 4.0 (0.38) 5.2   (0.50) 7.3   (0.68) 3.5 ! (1.21) 8.4 ! (3.61) 20.9   (4.15) 5.8   (1.32) 5.4   (0.56) 4.4   (0.51) 5.2   (0.56) 5.1   (0.48)
Male 7.2 (1.3) 5.3 (0.41) 5.3 (0.41) 5.4 (0.43) 4.2 (0.48) 6.5   (0.78) 7.9   (0.99) 3.6 ! (1.34)   (†) 17.7   (4.71) 7.1 ! (2.19) 5.7   (0.80) 4.2   (0.66) 5.4   (0.69) 6.4   (0.81)
Female 3.6 (0.7) 3.3 (0.31) 3.6 (0.34) 4.7 (0.35) 3.8 (0.40) 3.8   (0.44) 6.6   (0.66) 3.3 ! (1.33)   (†) 24.3   (3.44) 4.6   (1.27) 5.2   (0.72) 4.5   (0.64) 4.9   (0.69) 3.8   (0.59)
                                                                                 
Marijuana use on school
     property1 
7.0 (1.0) 4.5 (0.31) 4.6 (0.35) 5.9 (0.39) 4.6 (0.42) 6.7   (0.77) 7.7   (0.54) 4.5   (1.34) 12.5 ! (4.94) 20.9   (4.05) 8.1   (1.79) 5.4   (0.65) 6.2   (0.63) 6.2   (0.70) 5.4   (0.39)
Male 9.0 (1.3) 6.0 (0.46) 6.3 (0.54) 7.5 (0.56) 5.6 (0.63) 9.3   (1.21) 9.6   (0.73) 6.9 ! (2.57)   (†) 27.8   (6.91) 11.3   (2.56) 7.0   (0.97) 8.0   (1.03) 7.5   (1.07) 7.2   (0.62)
Female 4.6 (1.1) 3.0 (0.31) 2.8 (0.32) 4.1 (0.32) 3.4 (0.42) 4.1   (0.80) 5.7   (0.58)   (†)   (†) 13.4   (2.29) 5.2 ! (1.63) 3.7   (0.58) 4.2   (0.57) 4.7   (0.61) 3.5   (0.52)
                                                                                 
Offered, sold, or given an
     illegal drug on school
     property3 
31.7 (1.8) 25.4 (1.07) 22.7 (1.04) 25.6 (0.99) 22.8 (0.96) 22.8   (1.82) 33.2   (1.70) 23.3   (2.46) 38.9   (5.01) 40.5   (2.80) 33.3   (2.79) 23.7   (1.22) 27.8   (1.21) 27.0   (1.51) 23.8   (1.13)
Male 37.4 (2.3) 28.8 (1.22) 25.9 (1.36) 29.2 (1.10) 26.4 (1.18) 28.7   (2.44) 35.8   (1.67) 26.7   (3.51)   (†) 42.4   (3.06) 35.4   (4.05) 25.9   (1.34) 30.8   (1.85) 32.5   (1.86) 28.1   (1.76)
Female 24.7 (2.4) 21.8 (1.02) 19.3 (1.01) 21.7 (1.17) 18.9 (1.30) 17.0   (1.85) 30.5   (1.98) 19.3   (2.57)   (†) 38.3   (4.24) 31.1   (3.11) 21.3   (1.45) 24.6   (1.40) 21.3   (1.62) 19.3   (1.43)
†Not applicable.
!Interpret data with caution. The coefficient of variation (CV) for this estimate is between 30 and 50 percent.
# Rounds to zero.
‡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 One or more times during the 30 days preceding the survey.
2 Such as a gun, knife, or club.
3 One or more times during the 12 months preceding the survey.
4 Used chewing tobacco or snuff one or more times during the 30 days preceding the survey.
NOTE: Totals include other racial/ethnic groups not shown separately and students whose racial/ethnic group or grade was not reported. Race categories exclude persons of Hispanic ethnicity.
SOURCE: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, Youth Risk Behavior Survey (YRBS), 2011 National YRBS Data Files, retrieved September 7, 2012, from http://apps.nccd.cdc.gov/youthonline/App/Default.aspx. (This table was prepared September 2012.)
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National Center for Education Statistics - http://nces.ed.gov
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