The first part of your post I agree with. I understand that treating you like a non-human makes this outfit unworthy of any teacher.

About the 60 students per class, or more, that is standard in China. It won't likely change in the next few years, but as China ages and new people do not replace the old due to the one child policy this will change slowly.

My first year in China I had 22 classes with 60 plus students each! My second year I had 17 classes with 55 plus student. Now ONLY 11 classes with 55 plus students.

Thanks for the warning though!