The last uni campus I was on, when we had an active shooter, they locked down 2 buildings, and the area between them. No reason to lock down buildings clear on the other side of campus, keeping people in possible harms way.
I guess different schools, different rules, but locking down 36,000 people on a 1000 acre campus seems... Hardly effective.
I mean, it's better than containing a bunch of soft targets in confined areas... like literally shooting fish in a barrel.
I mean, it's not like cops are going to come to save you, look at Uvalde if you think otherwise.
Me? I'm getting the fuck OUT of a kill zone, not locking myself in one. The wider people spread, the better it is for all involved.