Table 228.13.

Number of school shootings at public and private elementary and secondary schools, by type of situation associated with shooting: School years 2000-01 through 2021-22

School year	Total	Situation associated with shooting
		Escalation of dispute1	Acci- dental2	Suicide or attempted suicide3	Domestic, with targeted victim4	Indiscrim- inate shooting5	Anger over grades/ suspension/ discipline6	Murder/ suicide7	Bullying8	Psychosis9	Hostage standoff10	Intentional property damage11	Self- defense12	Drive- by13	Illegal activity14	Unknown15
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17
Total, 2000-01    through 2021-22	1,375	441	137	96	56	65	13	10	18	13	31	46	11	117	99	222
2000-01	30	5	3	5	0	1	1	1	2	0	6	0	0	1	3	2
2001-02	17	5	3	1	1	0	0	0	0	0	4	0	0	0	2	1
2002-03	24	5	2	7	1	3	2	1	0	0	1	0	0	1	0	1
2003-04	34	11	4	3	2	2	0	1	1	0	2	0	1	3	3	1
2004-05	44	18	9	2	2	2	1	2	0	0	0	1	1	3	0	3
2005-06	51	26	7	2	1	0	1	0	1	1	2	0	0	5	4	1
2006-07	64	20	7	9	1	9	1	2	2	1	2	0	1	4	2	3
2007-08	16	5	1	3	0	0	1	0	1	0	1	1	1	1	1	0
2008-09	52	23	8	8	2	1	1	0	0	1	1	1	0	3	1	2
2009-10	15	4	1	0	3	0	1	0	3	2	0	0	1	0	0	0
2010-11	18	7	3	0	0	1	1	0	1	0	2	1	0	1	1	0
2011-12	16	5	2	1	2	2	1	0	1	0	0	0	1	1	0	0
2012-13	26	8	3	6	0	2	0	0	1	0	2	0	0	0	4	0
2013-14	46	19	3	5	2	3	0	1	1	1	0	1	0	4	4	2
2014-15	43	21	4	6	2	1	0	0	1	1	1	0	0	3	1	2
2015-16	38	9	11	0	5	2	1	0	0	2	0	1	0	3	2	2
2016-17	48	16	6	5	1	4	0	1	0	0	1	1	2	5	1	5
2017-18	89	25	18	7	5	7	1	1	2	2	0	4	1	3	6	7
2018-19	115	48	11	10	7	5	0	0	0	0	1	2	0	9	8	14
2019-20	116	46	9	2	5	6	0	0	1	0	0	6	2	10	11	18
2020-21	146	23	5	7	10	2	0	0	0	1	3	11	0	18	15	51
2021-22	327	92	17	7	4	12	0	0	0	1	2	16	0	39	30	107

1Argument or fight between the shooter and victim prior to the shooting.

2No intent to fire the weapon (e.g., showing off gun and it went off; gun in backpack went off).

3Suicide or attempted suicide by shooter, who was the only victim (not an indiscriminate shooting or revenge/bullying where shooter kills self during the shooting).

4Shooter had a romantic or familial relationship with the victim, or victim was in a romantic relationship with a former lover of the shooter.

5Targeted at random victims with the intent to kill or injure as many as possible (e.g., fired into a crowd; shot students in the hallway and random classrooms).

6Shooter primarily targeted teacher or school administrator due to recent poor grades, suspension, expulsion, or discipline. Also includes a school employee who targeted a school administrator or coworker following poor performance evaluation, suspension, or loss of employment.

7Shooter targeted victim and then immediately killed self (including other bystanders who were struck by gunfire but were not intended targets).

8Shooter was bullied by the victim(s) and did not indiscriminately target random students.

9Severe psychotic episode, or having paranoid schizophrenia stated in open-source reports (e.g., shooter believed the school was sending mind control signals or part of a government conspiracy).

10A standoff at the school between an armed shooter and law enforcement with or without hostages taken. Hostages may have been released without injury and/or no shots were fired during the standoff.

11Shots were fired to cause damage to the school building or vehicles on school property without intent to cause injury.

12Shooter fired in self-defense or defense of someone else.

13Shots were fired by a person in a vehicle at people, or another vehicle, on school property.

14Shots were fired during a robbery, sale or exchange of illegal drugs, trespassing, theft of property, or exchange of stolen property.

15There is not enough information available to determine the category.

NOTE: "School shootings" include all incidents in which a gun is brandished or fired or a bullet hits school property for any reason, regardless of the number of victims (including zero), time, day of the week, or reason (e.g., planned attack, accidental, domestic violence, gang-related). This table was created using a database that aims to compile information on school shootings from publicly available sources into a single comprehensive resource. For information on database methodology, see K-12 School Shooting Database: Research Methodology (https://www.chds.us/ssdb/resources/uploads/2020/09/CHDS-K12-SSDB-Research-Methods-Sept-2020.pdf). Due to adjustments made to the learning mode (in-person, remote, or hybrid) during the coronavirus pandemic, caution should be used when comparing data since 2019-20 with those from earlier years. Some data have been revised from previously published figures.

SOURCE: U.S. Department of Defense, Naval Postgraduate School, Center for Homeland Defense and Security, School Shooting Safety Compendium, internal data files. (This table was prepared September 2022.)