If I ask my principal not to give me a class with someone who triggers my anxiety, do you think she will do it?

Freshman year of high school, I was friends with a guy and a couple months later, our friendship ended terribly. We hated each other for a year afterwards. A couple months ago, I was sent to the principals office because of a fight he and I had online. It was in the office where I promised the principal I wasn't going to give in to his bait anymore. Truthfully, I don't do anything to him and vice versa. It's been easy since we didn't have any classes together. But one day, I was in the same class as him, for a Saturday school (I was there for extra credit) and he mimicked me. The entire four hours I was in a classroom with him, my heart was racing, my body was trembling and I lost all my confidence I usually have. My anxiety was so bad I could hardly talk. Now i'm worried for the new school year because I cannot afford to be in a class with him. If I talk with the principal, do you think she can write a note for my counselor to not give me a class with him ten days before school starts. p.s I've had a class schedule made for me in about 20 min before on the spot at my old school so I don't think it will be a problem for them.