Also: are we willing to put kindergarten teachers on trial for murder, or do we want to just take their word on it that students' lives were in danger?

(The thing about the scenarios was, a weapon was a litmus test. No weapon = all staff pelt towards the fight and break it up. Weapon = nobody (but police) approach, lockdown. Thankfully I never had to make the call, and only once in the two years I was there did anyone get stabbed.)