https://schoolshooters.info/

This website is an informative resource to understand the various profiles of school shooters.  The author of the website is Peter Langman, Ph.D.  who is also the author of School Shooters: Understanding High School, College, and Adult Perpetrators and Why Kids Kill: Inside the Minds Of School Shooters.

For any one who wants to learn more about this phenomenon, of school violence and school shooter profiles, these books and website are a good resource at this difficult time.