Governor Jerry Brown has signed a bill banning guns on school campuses.
State law already prohibited civilians who are not school workers from bringing firearms onto school grounds, but a change in the law last year gave school district superintendents power to decide whether they would let their employees carry.
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Five state school districts, including Kingsburg Joint Union had begun to allow employees carry guns on campus.
Supporters of the bill claimed the previous law endangered students.
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The law will go into effect January 1st.