1. A ka’asan and kapdan are two specific types that should not be in front of a classroom. The specific teacher seems to fit both descriptions.
2. A Rav is not G-d. You may be rejected by one glaringly incompetent Rav, but Hashem hasn’t rejected you. Get a grip.
3. If a teacher forces a student OTD, they will ultimately pay the price.
4. Find someone who can go to bat and advocate for you. Your parents are out to lunch.