First off, I think zero tolerance is ludicrous and should be abolished.
However, trying to put myself into an educator's shoes ... I'm not one, but I have two siblings who are and we talk often about education issues ... is it not more basically a response to (a.) parents who think their little angels' ca-ca doesn't stink being ready to sue schools/teachers/districts/etc. at the drop of a hat over every little thing and (b.) civil rights pros ready to sue schools/teachers/districts/etc. at the drop of a hat if a case involving a minority student is handled one iota differently than a case involving a white student?
I asked her about this, because my daughter has BAD asthma. Like, the drop dead kind.
The wife says our schools let the kids carry epi pens and inhalers, as long as they have a script. None of that "leave it in the nurses office" junk.
You might want to tell your siblings - if my daughter died because she was denied access to her rescue medicines, I would not sue them for murder, or reckless endangerment, or malfeasence, or the thousand other crimes that they would be guilty of.
I would take much more direct action.
Just a thought.