Nov. 7, 1994, Wickliffe: Keith Ledeger, 37, kills a custodian at Wickliffe Middle School and wounds four other adults. He is convicted and dies in prison.
RELATED: School threats: New year, same old story
Sources: FBI.gov, Ballotpedia, Everytownresearch.org
Note: Does not include suicides or attempted suicides. The 1984 fatal shooting of a school bus driver in Celina is not included here because it did not happen at the school.