" " Students at Tucson High Magnet School conduct a student walkout as part of the national #ENOUGH! Jeffrey J Snyder / ShutterstockThere are unfortunately myriad ways to classify the worst school shooting: the most shocking, the most emotionally devastating, the most preventable. Here, we offer historical context around the deadliest school shootings. This list focuses on fatal school shootings and mass shooting incidents on school campuses in the United States. The intent is informational and historical, not sensational, and the entries are ordered by reported death toll.

Source: Huffington Post January 20, 2026 15:12 UTC