A 15-year-old freshman girl at Lew Wallace High School in Gary, Ind., brought a mace--a long wooden stick attached to a metal chain with a spiked ball on the end--to school Thursday and swung it at a teacher. She struck a fellow student who intervened. The victim, a 19-year-old senior, suffered cuts on her hand and thumb. School security detained the freshman and confiscated the weapon.

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