Frequently Asked Questions (FAQs)

How did this effort begin?

The K-12 School Shooting Database was developed by two CHDS students and has remained a featured resource of CHDS since its inception. Tragically, school shootings have become more prevalent, and information and data from different sources have increased markedly. 

What is CHDS and how does it relate to school shootings?

CHDS is located at the Naval Postgraduate School (NPS) and is funded by the Federal Emergency Management Agency (FEMA) as a graduate curriculum. All NPS students conduct applied research to address critical issues in national defense, and students enrolled in the CHDS curriculum focus on homeland security.

What is the CHDS School Shooting Safety Compendium?

The new Compendium is a collection of data, website links, and graphics from numerous sources on the important topic of shooting incidents and safety at schools in the United States. Based on the CHDS K-12 School Shooting Database project, the Compendium provides access to data on school shootings (at the K-12 and college/university levels) for CHDS students, researchers, academics, policymakers and the public.

What changes are being made to the old database on the CHDS website?

As part of our new Compendium effort, the CHDS K-12 School Shooting Database will transition to a new resource, the CHDS K-12 School Shooting Data Report. The frequency of the data updates for this report will shift from a daily basis to less frequent periodic updates, but the data and analysis presented will continue to be validated and academically peer-reviewed. CHDS has also taken measures to maintain the historical record of the K-12 School Shooting Database on our website, ensuring that it will be preserved as a definitive, reliable resource.

Why are you making these changes?

Since 2003, CHDS has been a trusted resource for collecting data and original research. In keeping with these efforts, the CHDS School Shooting Safety Compendium will continue to link to the independent K-12 School Shooting Database and other similar data sources, in addition to maintaining the historical CHDS database record and offering expanded resources. You can see how CHDS takes this approach with other homeland security topics in our Homeland Security Digital Library at

How frequently will you update the data on the CHDS School Shooting Safety Compendium?

The data on the CHDS website is current through June 30, 2022 and will be updated periodically. We will also produce a report at least annually that will aggregate the most pertinent information gathered by CHDS.

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