This article lists incidents in which a firearm was discharged at a school infrastructure or campus in the United States prior to 2000, including incidents of shootings on a school bus. This list contains school shooting incidents that occurred on the campuses of K-12 public schools and private schools as well as colleges and universities. It excludes incidents that occurred during wars or police actions, as well as murder-suicides by rejected suitors or estranged spouses, and suicides or suicide attempts involving only one person. Mass shootings by school staff, where victims are only other employees, are covered at workplace killings. This list does not include the 1970 Kent State shootings, or bombings such as the Bath School disaster.