re: #22 Decatur Deb

Two cases in the wiki list—not typical of attacks. Two victims dead in each case, though the worst included 9 wounded.

January 29, 1979: San Diego, California, Brenda Ann Spencer opens fire on Grover Cleveland Elementary School from the window of her home across the street, killing two adults and wounding nine others, eight of whom were children.[157]

My point is that arming the entire school wouldn’t really help prevent attacks.