the right idea By Connie

Mary Ellen gave you some good advice. I wouldn't go to the principal unless your efforts don't produce any results.

I agree that going to her and being candid is the best thing. Maybe..." Sue, could we talk about our working relationship. I have really grown to respect your abilities as a teacher but there seems to be something that is getting in the way of our working together as professionals. Is there something I need to know?"

Be prepared though! She may have a whole lot of issues she hasn't been willing to forgive or let go of. It could be she is insecure and you really are a better teacher. I see a lot of jealousy between teachers and that causes a lot of friction. Making her rude comments aloud though is really unprofessional and mean. You could just let things go on and fester (ick) or confront them. Take the high road though! You will be able to sleep so much better at night.
Good luck.
Connie