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School shootings receive extensive media coverage and are frequent in the US (see list below).
They have sometimes resulted in nationwide changes of schools' policies concerning discipline and security.
According to studies, factors behind school shooting include family dysfunction, lack of family supervision, and mental illness.
For example, some perpetrators were children of divorce, lived in foster homes, or came from intact nuclear families.Oftentimes it seems to be a situation where the action is planned out by the intended person.While the targets can be random or there could be specific people, the attempt is generally not something that the offender does spur of the moment.A school shooting is an attack at an educational institution, such as a school or university, involving the use of a firearm(s).Incidents that involve four or more deaths are also categorized as mass shootings.