I didn’t know lockdown drills were exclusively for school shooters initially, especially given that school shooter drills (not lockdowns) also exist. But I suppose it would make sense for that tho be the catalyst.
Interesting! At my school, we just combine it. Basically, if you enter a school without a government ID and a good reason (unless it's like a performance or a game where you don't need to show your ID), you're considered an intruder. Also, it's to protect against anyone, even students, with weapons.
We had a very scary moment 10th grade year where someone yelled that there was a gun on the premises at our homecoming dance and this sent everyone into a panic, so much so that we all rushed out of the building and the parking lot emptied out pretty quickly. Those that couldn't drive were frantically calling their parents and there were a lot of people crying.
Thankfully, the local police set up an investigation but couldn't find any weapon on the school premises, nor the people who originally spread the rumor. If you legitimately thought there was a gun and you said something, that's one thing but making up things that can send people into a frenzy is illegal.
People could've gotten hurt just from evacuating the building so I'm glad that the rule just isn't to run away. It was a little different as this was a Saturday night instead of an in-session school day.
Also, one of the incidents got the people because they pulled the fire alarm and people went out immediately like they would for a fire drill. Now we have to wait a few minutes before we can go outside.