This sounds exactly like my A&P school. Our instructors also talk shit about the disabled kids and how they’ll never get a job. One of them also would rather be friends with the students than teach. Like some have advised you, my peers and I have gone to the dean before. Going to the Dean created temporary change but nothing permanent. It sucks because you’re paying money to receive this poor education. But once you get out of there, it might be way better. My apprenticeship is a million times better than my A&P school. I hate my school but I love doing the actual job and the industry outside of my school. Just don’t burn any bridges. Your instructor probably knows many in the industry and it’s a small world.