School shootings committed by pupils

On December 14, 2012, a mass shooting occurred at Sandy Hook Elementary School in Newtown, Connecticut, United States. The perpetrator, 20-year-old Adam Lanza, shot and killed 26 people. The victims were 20 children between six and seven years old, and six adult staff members. Earlier that day, before driving to the school, Lanza fatally shot his mother at their Newtown home. As first responders arrived at the school, Lanza killed himself with a gunshot to the head. The incident is the second deadliest school shooting in US history behind the Virginia Tech shooting in 2007.

On April 20, 1999, twelfth-grade students Eric Harris and Dylan Klebold murdered 13 students and 1 teacher in a school shooting and attempted bombing at Columbine High School in Columbine, Colorado, United States. Twenty people were injured by the gunfire, and three others were injured while trying to escape. The attack ended when Harris and Klebold died by suicide. The Columbine massacre was the deadliest mass shooting at a K–12 school in U.S. history until the Sandy Hook Elementary School shooting in December 2012. It remains among the most infamous massacres in the United States and the deadliest mass shooting in Colorado. As of June 2025, it had inspired more than 70 copycat attacks, a phenomenon dubbed the Columbine effect, and Columbine has become a byword for modern school shootings.

On May 24, 2022, a mass shooting occurred at the Robb Elementary School in Uvalde, Texas, United States, where 18-year-old Salvador Ramos, a former student at the school, fatally shot 19 students and 2 teachers, while injuring 18 others. Ramos was killed 77 minutes after entering the classroom by law enforcement officers.

shooting on the campus of Virginia Polytechnic Institute and State University in Blacksburg, Virginia, United States

school shooting in the Czech Republic

school shooting at Örebro, Sweden adult education centre

May 2021 mass shooting in Russia

2018 mass shooting in Parkland, Florida, USA

2018 school shooting and bombing in Kerch, Crimea

school shooting in Belgrade, Serbia

school shooting in Germany

2026 mass shooting in Turkey

On February 10, 2026, a mass shooting occurred in Tumbler Ridge, British Columbia, Canada. On that afternoon, Jesse Van Rootselaar killed her mother and half-brother at their home before going to Tumbler Ridge Secondary School, where she killed six people and injured twenty-seven others before killing herself. Van Rootselaar was a former student of the school.

2022 school shooting in Izhevsk, Udmurtia, Russia

1998 school shooting

2002 mass shooting in Germany

2014 school shooting in Otradnoye District, Moscow, Russia

school shooting in 2005

shooting that occurred on November 30, 2021

school shooting in Turkey

School shooting in Saskatchewan

school shooting, mass murder, murder–suicide and infanticide in Brazil

School shooting in Bryansk, Russia

school shooting in the Viertola district in Vantaa, Finland, on 2 April 2024

January 1979 school shooting in San Diego, California, USA

school shooting in Springfield, Oregon in 1998

2024 United States mass shooting

a November 14, 2019, school shooting at Saugus High School in Santa Clarita, California

School shooting

spree shooting at two schools in Aracruz, Brazil

1989 school shooting in Finland

Mass murder in California

April 1999 school massacre attempt in Taber, Alberta, Canada

shootout

2025 school shooting in Antioch, Tennessee

On the morning of October 14 of 2017 a student of the Brazilian private school Goyases open fire against his classmates, leaving two deaths and four injuries.

mass shooting at Florida State University on April 17, 2025