The Board didn't follow their own policies?  I'd like to say I'm shocked, but I am not.  This seems to be the way of doing business in government, and it never resolves anything.  When you have complaints and they are ignored, it sends all the wrong messages. 

Ignoring the faculty and staff is egregious.  Violating your own rules is counterproductive.  This can only lead to more animosity.

No one is responding to your requests because you are not listening.  Now more lawyers and unions will be involved.  Escalating the situation was not a responsible choice.  The reason you have YOUR OWN policies is because following them helps de-escalate these issues and it also a legal CYA.   Great job School Board (sarcasm).  

We are supposed to be role models for the students we teach.  They are supposed to speak up if they think something is wrong.  Do it the right way.

What you just taught them is no one is listening.  It's hopeless.  That is not the message they should be hearing.