Being pro Palestinian is not antisemitism. Being an anti-Zionist (denying Jewish people the right to self-determination) can and often does become antisemitic.
The actual report conducted by the AJC regarding issues of antisemitism at the school is out in the open now. You should ask to see a copy. The teacher created a hostile environment for Jewish teachers and students. He resigned because he couldn’t take criticism. As your Jewish friends at Maret how last night’s meeting went.