A Pennsylvanian school district has given its teachers baseball bats in the fight against school shooters.

All 500 teachers of Millcreek School District near Erie got a 41cm bat in the wake of the Parkland, Florida high school attack in February.

Though the bats are largely symbolic, Superintendent William Hall said, they are there as a "last resort".

"Unfortunately, we're in a day and age where one might need to use them to protect ourselves and our kids."

The superintendent said the aim was to have a "consistent tool" for every teacher in every classroom.

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