I think the hockey puck choice is stupid, arming students and teaching them to fight back (when cornered) rather than being a victim is a step in the right direction. But there are better things you could throw, like rocks or food cans for example. It’s almost like they don’t want the mass murderer to actually get hurt.
Also, these aren’t children, they’re legally adults. Some of them are actually adults and may have served or currybe serving in the military and may have concealed carry permits. But they’re likely not allowed to carry on this campus.
Furthermore, have they done anything else tangible to make the campus safer?