> There should have been a an immediate, massive police
> presence at that school.
Even without that, there should have been a warning to the campus community that murder had been committed and the killer was not apprehended, along with the usual boilerplate about vigilance concerning suspicious activity, etc, etc. And it shouldn’t just have been an e-mail 2 hours later.
After the initial shooting, the school should have been swarming with law enforcement within 15 minutes or so.