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Digest of Education Statistics: 2017
Digest of Education Statistics: 2017

NCES 2018-070
January 2018


Table 233.70b. Percentage of public schools with security staff present at school at least once a week, by type of security staff, school level, and selected school characteristics: 2005-06, 2009-10, and 2015-16
[Standard errors appear in parentheses]
School level and characteristic Any security staff1 Sworn law enforcement officers Security guards or other security personnel who are not sworn law enforcement officers
Any sworn law enforcement officers, including School Resource Officers (SROs)2 At least one officer who is an SRO At least one officer who is not an SRO
2005-06 2009-10 2015-16 2005-06 2009-10 2015-16 2005-06 2009-10 2015-16 2005-06 2009-10 2015-16 2005-06 2009-10 2015-16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
All public schools 41.7   (1.28) 42.8   (1.07) 56.5   (1.29) 36.3   (1.13) 35.0   (1.00) 47.7   (1.45) 32.4   (1.07) 31.1   (0.99) 42.0   (1.27) 9.3   (0.69) 8.3   (0.62) 10.9   (0.90) 19.3   (0.93) 21.7   (0.85) 19.8   (1.07)
                                                                                           
Enrollment size                                                                                          
Less than 300 22.7   (2.65) 25.6   (2.91) 34.8   (3.61) 20.0   (2.32) 20.3   (2.86) 28.8   (3.38) 16.4   (1.88) 17.1   (2.52) 23.6   (3.12) 5.9   (1.55) 6.6   (1.59) 8.3   (2.02) 7.4   (1.89) 11.1   (2.03) 9.7   (2.63)
300 to 499 29.8   (2.29) 33.5   (2.26) 49.9   (2.66) 25.4   (2.04) 25.1   (1.84) 42.0   (2.81) 21.7   (1.91) 21.4   (1.78) 36.2   (2.74) 7.0   (1.06) 5.9   (1.04) 10.4   (1.83) 11.3   (1.60) 15.5   (1.89) 13.2   (1.80)
500 to 999 50.5   (1.90) 47.3   (1.60) 64.6   (1.99) 43.9   (1.74) 38.8   (1.40) 53.3   (2.22) 40.3   (1.70) 35.3   (1.48) 47.4   (2.06) 9.9   (0.93) 7.5   (0.83) 11.5   (1.22) 21.9   (1.64) 22.2   (1.59) 21.5   (1.79)
1,000 or more 86.9   (1.39) 90.0   (1.37) 91.4   (1.73) 77.3   (1.51) 81.0   (1.71) 83.6   (1.58) 70.4   (1.71) 74.1   (1.52) 77.1   (1.58) 20.8   (1.57) 21.2   (1.58) 15.9   (2.17) 57.9   (1.93) 59.6   (1.68) 54.0   (2.04)
                                                                                           
Locale                                                                                          
City 49.1   (2.57) 50.9   (2.51) 61.9   (2.87) 39.4   (2.22) 39.2   (2.33) 44.5   (2.97) 34.0   (2.13) 34.3   (2.37) 39.0   (2.50) 13.4   (1.49) 10.2   (1.19) 10.7   (1.76) 33.3   (2.25) 34.6   (1.90) 34.9   (2.99)
Suburban 42.7   (1.67) 45.4   (1.90) 57.9   (2.30) 37.9   (1.69) 35.1   (1.48) 49.1   (2.39) 34.6   (1.78) 30.9   (1.43) 43.6   (2.34) 9.2   (1.02) 8.5   (1.05) 12.4   (1.69) 18.6   (1.21) 25.3   (1.93) 21.4   (1.62)
Town 44.4   (3.86) 39.0   (3.11) 62.0   (3.55) 42.0   (3.64) 36.8   (3.14) 58.3   (3.67) 39.0   (3.78) 34.6   (3.15) 49.0   (3.84) 7.6   (2.20) 5.3   (0.94) 15.7   (2.90) 15.3   (2.72) 12.2   (1.52) 10.6   (2.05)
Rural 33.8   (1.87) 35.2   (2.20) 46.7   (2.54) 30.5   (1.77) 30.5   (2.07) 44.3   (2.65) 26.7   (1.56) 26.9   (1.81) 39.7   (2.73) 6.6   (1.17) 7.9   (1.45) 7.1   (1.22) 10.1   (1.25) 11.7   (1.52) 7.1   (1.15)
                                                                                           
Percent combined enrollment
      of Black, Hispanic,
      Asian, Pacific Islander,
      and American Indian/
      Alaska Native students,
      and students of Two or
      more races
                                                                                         
Less than 5 percent 28.3   (1.96) 30.4   (2.69) 44.7   (6.25) 26.1   (1.95) 28.0   (2.59) 43.7   (6.31) 22.9   (1.95) 23.9   (2.45) 37.6   (5.41) 6.3   (1.28) 5.8 ! (1.77) 9.6 ! (3.02) 7.5   (1.56) 9.1   (2.05) 5.5 ! (2.21)
5 to less than 20 percent 38.9   (2.54) 36.5   (2.91) 54.3   (2.69) 34.7   (2.45) 32.8   (2.43) 51.5   (2.68) 30.9   (2.41) 28.9   (2.56) 45.7   (2.65) 6.5   (1.03) 8.2   (1.28) 11.3   (1.91) 13.6   (1.18) 14.0   (1.72) 8.5   (1.39)
20 to less than 50 percent 41.6   (2.32) 41.9   (1.93) 49.9   (2.55) 37.3   (2.28) 36.6   (1.83) 45.2   (2.59) 35.1   (2.27) 33.2   (1.67) 40.9   (2.22) 8.1   (1.44) 7.5   (1.06) 9.0   (1.59) 18.4   (1.86) 15.8   (1.18) 13.4   (1.32)
50 percent or more 51.3   (2.46) 52.5   (2.04) 63.7   (2.21) 42.0   (2.20) 38.2   (1.57) 47.6   (2.56) 36.1   (1.91) 34.1   (1.62) 41.0   (2.29) 14.4   (1.52) 9.8   (0.91) 12.1   (1.39) 32.0   (2.01) 35.8   (1.86) 32.8   (2.00)
                                                                                           
Percent of students
      eligible for free or
      reduced-price lunch
                                                                                         
0 to 25 percent 37.9   (2.14) 39.2   (2.44) 52.9   (3.77) 33.0   (2.13) 33.0   (2.33) 47.4   (3.59) 30.4   (2.23) 30.1   (2.35) 43.9   (3.48) 6.6   (0.71) 7.9   (1.25) 10.6   (1.87) 16.1   (1.28) 20.3   (1.89) 17.8   (2.23)
26 to 50 percent 42.1   (2.08) 40.0   (1.68) 50.8   (2.89) 38.7   (2.07) 34.5   (1.68) 45.4   (2.71) 34.5   (1.87) 30.6   (1.61) 41.4   (2.84) 8.9   (1.14) 7.9   (1.31) 9.5   (1.34) 16.4   (1.23) 15.8   (1.33) 13.8   (1.56)
51 to 75 percent 39.3   (2.21) 42.3   (2.60) 58.7   (2.47) 34.9   (2.03) 34.8   (2.21) 53.5   (2.63) 31.7   (2.06) 31.9   (2.05) 45.6   (2.46) 8.9   (1.21) 6.5   (0.92) 11.9   (1.67) 17.9   (1.89) 19.9   (1.83) 13.3   (1.75)
76 to 100 percent 49.8   (2.73) 49.8   (2.76) 62.2   (2.62) 39.8   (2.34) 37.5   (2.25) 44.6   (3.18) 33.1   (1.91) 31.7   (2.28) 37.9   (2.87) 14.4   (1.79) 11.2   (1.30) 11.6   (1.68) 30.0   (2.61) 32.1   (2.44) 33.4   (2.52)
                                                                                           
Percent of students who are
      Limited English
      Proficient (LEP)
                                                                                         
0 to 5 percent 39.9   (1.52) 41.9   (1.65) 55.5   (2.13) 35.1   (1.31) 35.3   (1.52) 49.1   (2.13) 31.4   (1.28) 31.2   (1.50) 43.6   (2.09) 8.9   (0.70) 8.5   (0.82) 10.1   (1.00) 16.6   (1.03) 18.3   (1.01) 15.4   (1.23)
6 to 20 percent 44.0   (2.14) 46.8   (3.15) 56.6   (3.08) 39.2   (2.13) 37.3   (2.71) 49.1   (3.27) 35.5   (2.29) 33.7   (2.51) 43.6   (3.13) 8.0   (1.18) 9.6   (1.49) 13.5   (1.88) 21.3   (1.81) 26.3   (2.17) 21.4   (1.97)
21 to 100 percent 46.2   (3.87) 40.8   (2.84) 59.2   (3.32) 37.6   (3.40) 30.8   (2.27) 42.1   (4.07) 32.1   (3.50) 27.5   (2.29) 35.5   (3.71) 13.2   (2.06) 5.8   (0.94) 9.9   (2.41) 29.0   (3.31) 27.7   (2.74) 30.2   (3.06)
                                                                                           
All primary schools3 26.2   (1.87) 27.7   (1.50) 45.4   (1.95) 21.0   (1.68) 20.4   (1.37) 35.8   (2.32) 18.5   (1.56) 18.0   (1.41) 30.4   (1.99) 4.9   (0.84) 4.1   (0.76) 9.0   (1.36) 11.1   (1.29) 14.2   (1.24) 14.0   (1.60)
                                                                                           
Enrollment size                                                                                          
Less than 300 15.7   (3.28) 18.5   (3.61) 30.7   (4.96) 14.4   (3.13) 15.4   (3.49) 24.9   (4.93) 12.1   (2.87) 13.9   (3.32) 18.9   (4.42) 3.3 ! (1.61)   (†) 8.1 ! (3.06)   (†) 7.4 ! (2.62) 9.0 ! (3.46)
300 to 499 22.8   (2.77) 26.8   (2.79) 44.1   (3.33) 18.0   (2.42) 17.8   (2.15) 35.3   (3.75) 14.6   (2.21) 14.7   (1.96) 30.5   (3.60) 4.9   (1.22) 3.8 ! (1.20) 10.0   (2.33) 10.4   (2.01) 13.3   (2.30) 12.5   (2.36)
500 to 999 34.2   (2.73) 32.3   (2.49) 53.7   (2.99) 26.9   (2.56) 24.5   (2.32) 41.8   (3.29) 25.3   (2.49) 22.3   (2.23) 36.5   (3.01) 6.0   (1.25) 4.2   (1.00) 8.6   (1.78) 15.0   (2.05) 17.9   (2.21) 17.3   (2.36)
1,000 or more 66.7   (8.90)   (†)   (†) 46.2   (9.37)   (†)   (†) 39.1   (9.15)   (†)   (†)   (†)   (†)   (†) 38.3   (9.31)   (†)   (†)
                                                                                           
Locale                                                                                          
City 33.0   (3.74) 32.9   (3.72) 48.7   (4.24) 22.0   (3.05) 22.9   (3.30) 29.4   (4.48) 18.3   (2.92) 19.7   (3.14) 23.8   (3.58) 6.6   (1.76) 4.5   (1.28) 7.4 ! (2.83) 22.7   (3.10) 21.9   (2.94) 27.6   (4.04)
Suburban 25.7   (2.39) 27.8   (2.59) 43.7   (3.56) 22.0   (2.38) 17.9   (2.00) 35.9   (3.64) 20.3   (2.42) 15.9   (1.78) 31.5   (3.47) 5.3   (1.34) 4.1   (1.21) 10.7   (2.37) 7.6   (1.37) 15.6   (2.51) 9.8   (2.23)
Town 26.7   (6.36) 23.1   (5.29) 55.4   (5.96) 25.4   (5.95) 23.1   (5.29) 52.0   (6.24) 23.3   (5.75) 22.0   (5.29) 40.7   (6.01)   (†)   (†) 16.8 ! (5.18)   (†) 5.0 ! (2.34)   (†)
Rural 19.3   (2.93) 24.3   (3.50) 39.0   (4.51) 17.1   (2.92) 19.4   (3.26) 35.8   (4.71) 14.6   (2.58) 16.6   (2.98) 32.2   (4.76) 3.5 ! (1.60) 5.2 ! (2.17) 4.7 ! (1.94) 4.6 ! (1.60) 8.7   (2.37) 7.4   (2.17)
                                                                                           
Percent combined enrollment
      of Black, Hispanic,
      Asian, Pacific Islander,
      and American Indian/
      Alaska Native students,
      and students of Two or
      more races
                                                                                         
Less than 5 percent 17.2   (3.32) 22.4   (4.69)   (†) 16.4   (3.39) 19.9   (4.55)   (†) 13.5   (3.24) 15.2   (3.86)   (†) 5.6 ! (2.24)   (†)   (†)   (†)   (†)   (†)
5 to less than 20 percent 23.0   (3.48) 21.1   (4.44) 46.4   (4.43) 19.6   (3.18) 17.6   (3.72) 43.3   (4.44) 16.7   (3.05) 14.6   (3.87) 38.4   (4.38) 3.5 ! (1.60) 4.4 ! (1.65) 9.4   (2.78) 4.7 ! (1.75) 6.9 ! (2.43) 6.4 ! (2.27)
20 to less than 50 percent 20.0   (3.29) 22.8   (2.67) 33.4   (3.99) 14.9   (3.13) 18.4   (2.26) 30.6   (4.16) 14.9   (3.13) 17.9   (2.27) 26.8   (3.84)   (†)   (†) 7.5 ! (2.37) 9.0   (2.36) 7.8   (1.95) 4.9 ! (1.79)
50 percent or more 35.9   (3.33) 36.7   (2.84) 53.5   (3.01) 26.9   (2.93) 23.6   (2.22) 35.4   (3.66) 23.1   (2.87) 21.1   (2.27) 28.8   (3.16) 7.9   (1.87) 5.0   (1.15) 10.3   (2.11) 20.2   (2.70) 25.4   (2.57) 24.3   (2.80)
                                                                                           
Percent of students
      eligible for free or
      reduced-price lunch
                                                                                         
0 to 25 percent 20.9   (3.02) 17.1   (3.15) 33.8   (5.61) 16.3   (2.95) 11.4   (2.83) 30.0   (5.40) 14.5   (2.88) 9.7   (2.63) 29.4   (5.40) 3.1 ! (1.12) 2.8 ! (1.25) 5.9 ! (2.37) 7.7   (1.76) 9.3   (2.34) 8.8 ! (3.11)
26 to 50 percent 22.1   (3.04) 24.4   (2.73) 39.8   (3.99) 19.6   (2.89) 19.8   (2.99) 34.9   (3.97) 16.7   (2.61) 18.1   (2.92) 32.3   (3.99) 3.9 ! (1.57) 4.3 ! (1.96) 6.8   (1.93) 5.0 ! (1.63) 9.2   (2.10) 6.9   (2.05)
51 to 75 percent 22.4   (3.13) 28.6   (3.36) 48.2   (4.00) 18.0   (3.08) 21.2   (2.72) 42.9   (4.38) 17.6   (3.03) 19.6   (2.77) 33.6   (3.78) 2.8 ! (1.09) 1.9 ! (0.87) 12.5   (2.83) 9.5   (2.18) 13.6   (2.50) 7.4 ! (2.60)
76 to 100 percent 40.6   (3.26) 37.7   (3.77) 54.1   (3.67) 30.9   (2.79) 26.9   (3.28) 33.6   (4.40) 25.7   (2.52) 22.4   (3.28) 26.7   (3.86) 10.2   (2.22) 7.4   (1.73) 9.6   (2.49) 22.9   (3.22) 23.0   (3.23) 28.2   (3.27)
                                                                                           
Percent of students who are
      Limited English
      Proficient (LEP)
                                                                                         
0 to 5 percent 22.6   (2.24) 24.6   (2.48) 42.8   (3.28) 17.7   (1.81) 18.5   (2.24) 36.3   (3.47) 15.2   (1.57) 15.7   (2.13) 31.0   (3.46) 4.4   (1.02) 4.0   (1.16) 8.4   (1.79) 8.2   (1.41) 9.9   (1.59) 9.3   (1.89)
6 to 20 percent 28.0   (3.21) 32.4   (4.25) 41.2   (4.47) 23.3   (3.01) 23.7   (3.43) 35.0   (4.55) 20.8   (3.09) 21.6   (3.19) 30.5   (4.24) 4.6 ! (1.68) 5.8 ! (1.86) 11.5   (2.80) 11.5   (2.74) 18.3   (3.18) 10.0   (2.55)
21 to 100 percent 35.9   (4.32) 30.7   (3.74) 54.0   (3.94) 28.9   (4.10) 21.8   (2.90) 35.4   (4.65) 26.3   (4.08) 20.1   (2.82) 29.4   (4.19) 7.0 ! (2.18) 2.7 ! (1.15) 7.7 ! (2.51) 20.0   (3.08) 20.9   (3.38) 26.0   (3.68)
                                                                                           
All secondary schools4 63.3   (1.52) 64.4   (1.15) 72.3   (1.43) 57.8   (1.60) 56.1   (1.25) 64.8   (1.38) 51.8   (1.59) 50.0   (1.22) 58.4   (1.33) 15.4   (1.03) 14.2   (0.85) 13.6   (0.95) 30.8   (1.05) 32.5   (1.04) 28.0   (0.97)
                                                                                           
Enrollment size                                                                                          
Less than 300 32.8   (3.85) 36.2   (3.47) 40.3   (4.82) 28.2   (3.38) 27.8   (3.38) 33.8   (4.38) 22.7   (3.37) 21.8   (2.75) 29.9   (4.16) 9.6   (2.47) 10.9   (2.27) 8.5   (2.15) 12.8   (2.88) 16.8   (3.03) 10.6   (3.18)
300 to 499 48.7   (3.97) 51.2   (3.38) 64.6   (3.96) 45.3   (3.73) 44.5   (3.44) 59.0   (3.91) 40.7   (3.51) 39.0   (3.53) 50.6   (3.92) 12.8   (2.33) 11.3   (1.74) 11.4   (2.22) 13.6   (2.15) 21.1   (2.48) 14.8   (2.17)
500 to 999 74.8   (1.96) 70.9   (1.95) 82.5   (1.76) 69.3   (2.00) 61.4   (1.83) 72.3   (1.86) 62.8   (2.24) 55.9   (1.95) 65.4   (2.08) 15.8   (1.41) 12.6   (1.46) 16.2   (1.44) 32.4   (2.21) 29.1   (1.94) 28.3   (1.80)
1,000 or more 90.1   (1.07) 93.5   (1.09) 95.9   (1.16) 82.1   (1.41) 85.3   (1.43) 90.0   (1.47) 75.2   (1.50) 78.1   (1.55) 83.9   (1.75) 22.9   (1.61) 22.4   (1.58) 16.9   (2.32) 60.9   (1.85) 62.4   (1.70) 57.8   (1.94)
                                                                                           
Locale                                                                                          
City 82.2   (2.30) 85.8   (2.38) 86.0   (2.52) 75.2   (2.65) 70.8   (2.87) 72.0   (2.69) 66.4   (2.64) 62.7   (2.72) 66.7   (2.90) 27.4   (2.36) 21.1   (2.25) 16.6   (2.12) 55.1   (2.75) 59.4   (2.60) 48.3   (3.00)
Suburban 71.2   (1.92) 76.9   (2.13) 81.9   (1.97) 64.9   (2.24) 66.2   (2.26) 71.4   (2.02) 58.5   (2.39) 57.9   (2.38) 64.0   (2.39) 15.9   (1.28) 16.4   (1.73) 15.2   (1.58) 37.0   (1.85) 42.8   (2.13) 41.0   (1.99)
Town 64.6   (3.68) 56.9   (2.72) 68.9   (3.56) 60.8   (3.62) 52.2   (2.81) 65.0   (3.70) 56.8   (4.45) 48.7   (2.97) 57.7   (3.86) 13.8   (3.92) 10.0   (1.50) 14.4   (2.62) 25.9   (3.67) 20.2   (2.29) 16.5   (2.63)
Rural 47.4   (3.28) 46.7   (2.42) 54.8   (2.92) 42.9   (3.11) 42.1   (2.31) 53.2   (2.86) 38.1   (2.76) 37.7   (2.23) 47.5   (2.81) 9.5   (1.52) 10.7   (1.60) 9.7   (1.81) 15.2   (1.75) 15.0   (1.98) 6.7   (0.82)
                                                                                           
Percent combined enrollment
      of Black, Hispanic,
      Asian, Pacific Islander,
      and American Indian/
      Alaska Native students,
      and students of Two or
      more races
                                                                                         
Less than 5 percent 40.4   (4.10) 38.4   (3.53) 57.6   (6.65) 36.5   (3.94) 36.1   (3.45) 55.7   (6.86) 33.0   (3.57) 32.5   (3.43) 47.7   (6.63) 7.1   (1.73) 6.9   (1.30) 14.9 ! (4.65) 10.8   (1.67) 12.7   (2.44) 7.1   (2.04)
5 to less than 20 percent 58.9   (2.55) 57.1   (2.79) 63.4   (3.05) 53.6   (2.51) 53.1   (2.65) 61.0   (3.15) 48.9   (2.58) 48.0   (2.38) 54.1   (3.05) 10.4   (1.30) 13.3   (1.63) 13.6   (1.82) 24.8   (1.66) 23.4   (1.88) 10.9   (1.11)
20 to less than 50 percent 70.3   (3.09) 70.4   (2.82) 73.2   (3.27) 67.1   (3.13) 63.7   (2.90) 65.8   (2.91) 61.9   (3.47) 56.1   (2.84) 60.8   (2.88) 16.7   (2.88) 15.5   (1.98) 11.1   (1.69) 31.0   (3.04) 27.8   (1.85) 25.3   (2.11)
50 percent or more 81.4   (2.53) 80.0   (2.44) 81.6   (2.22) 71.5   (2.52) 63.5   (2.69) 68.9   (2.22) 61.7   (2.74) 56.7   (2.53) 62.3   (2.26) 27.1   (2.32) 18.1   (1.78) 15.2   (1.54) 55.2   (2.76) 53.8   (2.46) 47.7   (2.22)
                                                                                           
Percent of students
      eligible for free or
      reduced-price lunch
                                                                                         
0 to 25 percent 57.6   (2.62) 68.9   (2.36) 80.8   (2.35) 52.3   (2.59) 62.1   (2.31) 73.0   (2.74) 48.7   (2.63) 57.4   (2.35) 65.0   (3.16) 10.7   (1.14) 14.6   (1.83) 17.3   (2.24) 25.9   (1.79) 35.2   (2.41) 31.0   (2.32)
26 to 50 percent 64.5   (2.86) 56.2   (1.88) 64.0   (3.02) 60.2   (2.91) 49.9   (1.77) 58.0   (2.78) 54.5   (2.62) 43.6   (1.90) 52.3   (2.76) 14.6   (1.57) 11.7   (1.30) 12.8   (1.82) 29.3   (1.66) 22.6   (1.71) 22.1   (2.12)
51 to 75 percent 63.1   (3.15) 63.3   (3.05) 71.8   (3.13) 58.6   (3.20) 55.7   (2.94) 66.5   (2.92) 51.6   (3.34) 50.7   (2.77) 60.4   (2.76) 17.5   (2.69) 13.6   (1.82) 11.2   (1.70) 29.9   (2.59) 29.7   (2.35) 20.7   (1.89)
76 to 100 percent 75.7   (4.28) 76.0   (3.45) 77.8   (3.13) 64.6   (4.31) 60.6   (3.50) 65.7   (3.35) 53.8   (4.34) 51.9   (3.15) 59.4   (3.45) 26.2   (3.66) 19.4   (2.46) 15.4   (2.07) 49.7   (4.85) 51.6   (3.40) 43.4   (2.97)
                                                                                           
Percent of students who are
      Limited English
      Proficient (LEP)
                                                                                         
0 to 5 percent 59.2   (1.67) 61.7   (1.47) 68.1   (1.84) 54.6   (1.70) 54.6   (1.70) 61.8   (1.77) 49.5   (1.78) 49.0   (1.61) 56.2   (1.67) 13.9   (1.10) 13.7   (0.98) 11.9   (0.96) 25.9   (1.26) 28.0   (1.23) 21.5   (1.35)
6 to 20 percent 72.7   (4.32) 72.0   (3.43) 81.4   (2.93) 67.6   (4.21) 61.3   (3.42) 71.7   (3.00) 61.6   (4.00) 54.9   (3.26) 64.5   (3.07) 14.1   (1.90) 16.3   (2.01) 16.8   (1.77) 38.9   (2.67) 40.6   (2.47) 39.6   (2.84)
21 to 100 percent 79.4   (3.73) 68.9   (5.09) 79.9   (4.83) 65.4   (4.11) 55.9   (4.05) 68.9   (4.62) 50.5   (5.11) 48.1   (3.52) 59.8   (4.74) 32.9   (4.29) 14.3   (2.43) 18.5   (3.78) 57.8   (5.02) 46.6   (4.07) 46.9   (4.17)
†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 Under "Any security staff," schools that reported having more than one type of security staff were counted only once.
2 School Resource Officers (SROs) include all career sworn law enforcement officers with arrest authority who have specialized training and are assigned to work in collaboration with school organizations. Under "Any sworn law enforcement officers," schools that reported having both SROs and other sworn law enforcement officers were counted only once.
3 Primary schools are defined as schools in which the lowest grade is not higher than grade 3 and the highest grade is not higher than grade 8.
4 Secondary schools include both middle and high schools as well as combined schools. Middle schools are defined as schools in which the lowest grade is not lower than grade 4 and the highest grade is not higher than grade 9. High schools are defined as schools in which the lowest grade is not lower than grade 9 and the highest grade is not higher than grade 12. Combined schools have any combination of grades (including K-12) that is not defined specifically as primary, middle, or high school.
NOTE: Responses were provided by the principal or the person most knowledgeable about crime and safety issues at the school. "At school" was defined to include activities happening in school buildings, on school grounds, on school buses, and at places that hold school-sponsored events or activities.
SOURCE: U.S. Department of Education, National Center for Education Statistics, 2005-06, 2009-10, and 2015-16 School Survey on Crime and Safety (SSOCS), 2006, 2010, and 2016. (This table was prepared September 2017.)