List of attacks related to secondary schools

This is a list of attacks related to secondary schools that have occurred around the world. These are attacks that have occurred on school property or related primarily to school issues or events. A narrow definition of the word attacks is used for this list so as to exclude warfare, robberies, gang violence, public attacks (as in political protests), accidental shootings, and suicides and murder–suicides by rejected spouses or suitors. Incidents that involved only staff who work at the school have been classified as belonging at List of workplace killings. It also excludes events where no injuries take place, if an attack is foiled and attacks that took place at colleges.

The listed attacks include shootings, stabbings, slashings, bombings, and beatings administered with blunt instruments.