Like many school districts across the nation, the school district has it's own police force: "San Diego Unified School District Police Department". Of course many now want their own SWAT teams. For the children!
What kind of schools they're running if they need cops so often that they've formed their own force? I'm pretty sure none of my schools in Canada and Finland had even a security guard.
I must have completely missed that, thanks! Luckily my first point still stands.