It hurts, and it sucks, but you ARE a first year teacher.
The SAME thing happened to me my first year. And I got a bee in my bonnet and went to my principal. I had a year's worth of documentation and everything about how he didn't do his job.
Turns out, the principal was his best friend and fishing buddy. I was shoved out because I "wasn't a good fit here."
Put in your time. Do YOUR job to the best of YOUR ability. He will eventually retire or you will go on to get a better job. But seriously, do NOT go above anyone's head the first year of teaching. Bad news.