From an article:
Three times in the last 20 days, officers from Stockton Unified School District's police squad have seized weapons.
One came from a high school campus, one from a drunk driver near a school, and the most recent from Van Buren Elementary School on Monday.
"These are not defensive weapons," school district police Chief Jim West said. "They're not designed to stop someone from hurting you; they're designed to hurt someone else."