1Columbine High School Massacre
3Sandy Hook Elementary School, Newtown, CT
5University of Texas Massacre
8Winnenden School Shooting
9Ãcole Polytechnique Massacre
10Parkland High School Florida Shootings
11Kauhajoki School Shooting
12Rio de Janeiro School Shooting
13Azerbaijan State Oil Academy Shooting
14Santa Fe Texas Shooting
16Discovery Middle School Shooting
17Colegio Americano del Noroeste Massacre
19Thurston High School (Springfield, Oregon) Rampage
20SuccessTech Academy Shooting
22Busto Arsizio Pizzeria and School Shooting
23Robb Elementary School Shooting, Uvalde, TX
24Westside Middle School Massacre
25Santana High School Shooting
26Umpqua Community College Shooting
27Chardon High School shooting
28Kerch Polytechnic College Massacre
30Highlands Ranch Shooting
33Fares English Comprehensive School Shooting
35Milton School Shootings
