Table 7. Number and percentage of public middle schools reporting disruptions for bomb or anthrax threats with the number of incidents reported, by selected school characteristics: 1999

Crime and Safety Surveys

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Table 7. Number and percentage of public middle schools reporting disruptions for bomb or anthrax threats with the number of incidents reported, by selected school characteristics: 1999–2000

School characteristic	Number of schools	Percent of schools	Number of incidents
All public middle schools	2,488	16	5,843

Enrollment size
Less than 300	136	5	171
300–499	598	18	943
500–999	1,188	16	2,849
1,000 or more	566	29	1,879

Urbanicity
City	717	21	1,639
Urban fringe	873	16	2,535
Town	323	13	702
Rural	575	14	967

Crime level where students live¹
High	224	30	627
Moderate	520	20	1,527
Low	1,398	14	2,914
Mixed	347	17	775

Percent minority enrollment¹
0–5 percent	532	12	1,023
6–20 percent	683	17	1,670
21–50 percent	575	16	1,215
More than 50 percent	698	20	1,934

Percent of students eligible for free/reduced-price lunch
0–20 percent	567	12	1,435
21–50 percent	923	14	1,964
More than 50 percent	998	23	2,445

Percent of students below 15^th percentile on standardized tests
0–5 percent	584	14	1,260
6–15 percent	1,001	15	2,597
More than 15 percent	903	20	1,986

Percent of students likely to attend college
0–35 percent	786	18	1,764
36–60 percent	982	17	2,527
More than 60 percent	720	13	1,552

Percent of students who consider academic achievement important
0–25 percent	227	14	883
26–50 percent	518	16	1,217
51–75 percent	1,018	20	2,388
More than 75 percent	724	14	1,355

Percent male enrollment
0–44 percent	293	14	1,133
45–55 percent	1,928	16	4,171
More than 55 percent	267	20	539

Student/teacher ratio¹,²
Less than 12	612	13	1,531
12–16	930	16	1,696
More than 16	811	19	2,293

Number of classroom changes¹
0–3 changes	74	8	146
4–6 changes	846	15	1,811
More than 6 changes	1,324	18	3,196

Use of paid law enforcement³
Regular use	2,212	21	5,017
No regular use	276	6	826

Number of serious discipline problems⁴
No problems	571	10	1,079
1 problem	460	12	1,013
2 problems	382	16	705
3 or more problems	1,075	28	3,046

Transfers as percentage of enrollment¹,⁵
0 to 6 percent	622	16	1,463
6 to 11 percent	569	17	1,584
11 to 21 percent	494	13	1,226
21 percent or more	727	18	1,446

Percent of students absent without excuses
None	256	9	831
1–2 percent	1,083	17	2,151
3–5 percent	620	17	1,371
6–10 percent	400	19	1,073
More than 10 percent	129	24	416

Prevalence of violent incidents
No violent incidents	105	5	191
Any violent incidents	2,299	17	5,448
¹ Some schools are omitted from these categories because of missing data on their school characteristics. For this reason, the detailed results do not sum to the totals. See appendix J of 2000 School Survey on Crime and Safety (SSOCS) Detailed Data Documentation (NCES 2004-307) for further information.
² Student/teacher ratio was calculated by dividing the total number of students enrolled in the school by the total number of full-time equivalent teachers. The total number of full-time equivalent teachers is a combination of the full-time and part-time teachers, including special education teachers, with an adjustment to compensate for the part-time status.
³ Schools were included as regularly using paid law enforcement if they reported the use of paid law enforcement during any of the following times: at any time during school hours, while students were arriving or leaving, at selected school activities (e.g., athletic and social events, open houses, science fairs), or at any other time that the respondent specified.
⁴ Serious discipline problems is a count of discipline problems reported by principals. These discipline problems include student racial tensions, student bullying, student verbal abuse of teachers, widespread disorder in classrooms, and student acts of disrespect for teachers. If a principal 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. Undesirable gang activities and undesirable cult or extremist group activities were also counted once as a problem if the principal reported that these events occurred at all in their school.
⁵ Transfers 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.
NOTE: Detail may not sum to totals because of rounding. "At school/at your school" was defined for respondents as including activities happening in school buildings, on school grounds, on school buses, and at places that are holding school-sponsored events or activities. Respondents were instructed to, unless the survey specified otherwise, only respond for those times that were during normal school hours or when school activities/events were in session. Bomb or anthrax threats were defined for respondents as bomb scares, anthrax scares, or comparable school wide threats (not including fire). 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.
SOURCE: U.S. Department of Education, National Center for Education Statistics, School Survey on Crime and Safety (SSOCS), 2000.

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