As far as what has happened in the past, I can offer little advice other than to wait it out and see what the school decides. the advice I can offer is for the future. You will never change the mind of the type of person your dealing with so it's best not to lower yourself to their level by calling them names or arguing with them. The best revenge comes from walking away from them and waiting for them to incriminate themselves. This might amount to reporting what they said or waiting for them to cause another violation where it's witnessed. You have the advantage of time and they have the disadvantage of they must never be caught making a mistake.
I know it's difficult to be silent but by doing so, your proving that your a better person than they are. They thrive on bending your will so by not acting, your doing the one thing they never expected. We are with you here and if you need to vent when something like this happens to you, do so here where you have a friendly ear.