Table 7. Number and percentage of public schools reporting disruptions at school from death threats, bomb threats, or chemical, biological, or radiological threats, the number of incidents reported, and the rate of disruptions per 1,000 students, by selected school characteristics: School year 2009

Crime and Safety Surveys

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Table 7. Number and percentage of public schools reporting disruptions at school from death threats, bomb threats, or chemical, biological, or radiological threats, the number of incidents reported, and the rate of disruptions per 1,000 students, by selected school characteristics: School year 2009–10


	Disruptions from death threats, bomb threats, or chemical, biological, or radiological threats
School characteristic	Number of schools		Percent of schools		Number of incidents		Rate per 1,000 students
All public schools	4,300		5.2		5,700		0.1

Level¹
Primary	1,900		4.0		2,400		0.1
Middle	900		6.2		1,400		0.1
High school	1,000		8.0		1,400		0.1
Combined	400	!	6.7	!	500	!	0.2	!

Enrollment size
Less than 300	1,000		5.1		1,200	!	0.3	!
300–499	1,000		4.0		1,200		0.1	!
500–999	1,400		4.7		1,900		0.1
1,000 or more	900		10.0		1,400		0.1

Urbanicity
City	1,200		5.7		1,600		0.1	!
Suburb	1,400		5.9		2,000		0.1
Town	800		6.8		1,000		0.2
Rural	800		3.3		1,100		0.1	!

Crime level where students live²
High	500		7.7		700		0.2
Moderate	1,400		7.4		1,800		0.2
Low	1,700		3.6		2,200		0.1
Mixed	800		7.1		900		0.1	!

Percent of combined Black/African American, Hispanic/Latino, Asian, Native Hawaiian/Other Pacific Islander, and American Indian/ Alaska Native students
Less than 5 percent	500	!	4.1	!	600	!	0.1	!
5 to less than 20 percent	1,000		4.6		1,200		0.1	!
20 to less than 50 percent	1,000		5.1		1,500		0.1
50 percent or more	1,800		5.9		2,400		0.1

Percent of students eligible for free or reduced-price lunch
0–20 percent	500		4.0		700		0.1
21–50 percent	1,200		4.6		1,700		0.1
More than 50 percent	2,500		5.9		3,400		0.2

Percent of students below 15th percentile on standardized tests
0–5 percent	1,400		4.2		1,700		0.1
6–15 percent	1,600		5.2		2,000		0.1
More than 15 percent	1,300		6.8		2,000		0.2

Percent of students likely to attend college
0–35 percent	1,200		6.5		1,500		0.2
36–60 percent	1,200		4.9		1,600		0.1	!
More than 60 percent	1,900		4.7		2,600		0.1

Percent of students who consider academic achievement important
0–25 percent	300	!	6.2	!	400	!	0.2	!
26–50 percent	500		4.4		800		0.1	!
51–75 percent	800		3.5		1,100		0.1
More than 75 percent	2,600		6.2		3,400		0.1

Percent male enrollment
0–44 percent	400	!	5.4	!	600	!	0.1	!
45–55 percent	3,300		5.0		4,600		0.1
More than 55 percent	500	!	5.9	!	500	!	0.1	!

Student-to-FTE ratio³
Less than 12 students	700	!	5.5		800		0.2
12–16 students	1,400		4.4		1,900		0.1
More than 16 students	2,200		5.7		2,900		0.1

Number of classroom changes ⁴
0–3 changes	600	!	3.3	!	900	!	0.1	!
4–6 changes	2,100		5.5		2,700		0.1
More than 6 changes	1,600		6.0		2,100		0.1

Regular use of law enforcement ⁵
Regular use	2,000		5.8		2,900		0.1
No regular use	2,200		4.7		2,800		0.1

Number of serious discipline problems⁶
No problems	3,000		4.9		3,700		0.1
1 problem	700		4.8		1,000		0.1
2 problems	300	!	7.6		500	!	0.2	!
3 or more problems	300	!	6.9		500		0.1	!

Transfers as a percentage of enrollment⁷
Less than 6 percent	900		4.5		1,000		0.1
6 to less than 11 percent	800		4.4		1,400		0.1	!
11 to less than 21 percent	1,100		5.0		1,400		0.1
21 percent or more	1,400		6.6		1,900		0.2

Percent of students absent on a daily basis
0–2 percent	300	!	‡		‡		‡
3–5 percent	2,100		4.4		2,600		0.1
6–10 percent	1,500		5.9		2,200		0.1	!
More than 10 percent	400	!	9.5	!	600	!	0.2	!

Prevalence of violent incidents⁸
No violent incidents	500	!	2.3	!	600	!	0.1	!
Any violent incidents	3,800		6.2		5,000		0.1
!Interpret data with caution. The standard error for this estimate is from 30 percent to 50 percent of the estimate’s value.
‡Reporting standards not met. The standard error represents more than 50 percent of the estimate.
¹Primary 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. 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 include all other combinations of grades, including K–12 schools.
²Respondents were asked, "How would you describe the crime level in the area(s) in which your students live?" Response options included "high level of crime," "moderate level of crime," "low level of crime," and "students come from areas with very different levels of crime."
³Student-to-FTE ratio was calculated by dividing the total number of students enrolled in the school by the total number of full-time-equivalent teachers and aides. The total number of full-time-equivalent teachers and aides is a combination of the full-time and part-time teachers and aides, including special education teachers and aides, with an adjustment to compensate for the part-time status.
⁴Respondents were asked, "How many classroom changes do most students make in a typical day?" Responses exclude morning arrival and afternoon departure.
⁵Respondents were asked, "During the 2009–10 school year, did you have any security guards, security personnel, or sworn law enforcement officers present at your school at least once a week?"
⁶Serious discipline problems include student racial/ethnic tensions, student bullying, student sexual harassment of other students, student verbal abuse of teachers, widespread disorder in classrooms, student acts of disrespect for teachers other than verbal abuse, gang activities, and cult or extremist group activities. If a respondent reported that any of these problems occurred daily or weekly in their school, each was counted once in the total number of serious discipline problems.
⁷Transfers as a percentage of enrollment combines the number of students who were transferred to a school and the number of students who were transferred from a school divided by the total number of students enrolled in the school.
⁸Violent incidents include rape or attempted rape, sexual battery other than rape, physical attack or fight with or without a weapon, threat of physical attack with or without a weapon, and robbery with or without a weapon.
NOTE: "At school" was defined for respondents to include activities happening in school buildings, on school grounds, on school buses, and at places that hold school-sponsored events or activities. Detail may not sum to totals because of rounding. Responses were provided by the principal or the person most knowledgeable about crime and safety issues at the school.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics (NCES), 2009–10 School Survey on Crime and Safety (SSOCS).

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