When researching school shootings the best place to start is Google. From Google learn the location (state and town name), school name, name of the shooter, and often, if an older shooting if the shooter went to prison or not. Once you have that information turn to the databases that cover News such as Newspaper Source Plus, or Nexis Uni particularly if the shooting is within the past year. Newspapers will often give first-hand accounts of the shooting these are considered Primary Sources. News stories will also often compare the current shooting with an older one that will have been covered in scholarly articles.
| Date | Location | Deaths | Injuries |
| January 16, 2002 | Grundy, Virginia | 3 | 3 |
| October 28, 2002 | Tucson, Arizona | 4[n 1] | 0 |
| March 21, 2005 | Red Lake, Minnesota | 10[n 1] | 7 |
| October 2, 2006 | Nickel Mines, Pennsylvania | 6[n 1] | 5 |
| April 16, 2007 | Blacksburg, Virginia | 33[n 1] | 23 |
| February 14, 2008 | DeKalb, Illinois | 6[n 1] | 21 |
| February 27, 2012 | Chardon, Ohio | 3 | 3 |
| April 2, 2012 | Oakland, California | 7 | 3 |
| December 14, 2012 | town, Connecticut | 27[n 1] | 2 |
| June 7, 2013 | Santa Monica, California | 6[n 1] | 4 |
| October 24, 2014 | Marysville, Washington | 5[n 1] | 1 |
| October 1, 2015 | Roseburg, Oregon | 10[n 1] | 9 |
| September 28, 2016 | Townville, South Carolina | 2 | 2 |
| April 10, 2017 | San Bernardino, California | 3[n 1] | 1 |
| November 14, 2017 | Rancho Tehama Reserve, California | 6[n 1] | 18 |
| February 14, 2018 | Parkland, Florida | 17 | 17 |
| May 18, 2018 | Santa Fe, Texas | 10 | 13[n 1] |
| February 3, 2020 | Commerce, Texas | 2 | 1 |
| November 30, 2021 | Oxford Township, Michigan | 4 | 7 |
| February 1, 2022 | Bridgewater, Virginia | 2 | 1[n 1] |
| May 24, 2022 | Uvalde, Texas | 22[n 1] | 18 |
n = shooter