In its first media event since a gun and ammunition were found in a student’s backpack at Preble High School, Green Bay School District leaders said "everything is on the table" when it comes to security upgrades.

Starting Sept. 22, Green Bay students in grades six through 12 will be required to carry clear backpacks if they choose to bring a bag to school. That's a first step, said Green Bay School District Superintendent Vicki Bayer.

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