I'm teaching on behalf of a Chinese agent at a run-of-the-mill public senior high in a county of one of China's poorer and more backward provinces. I've just been told by my teaching assistant that the agent is receiving 100 Yuan/academic year/student taught by me and her. I'm teaching 18 x 45 minutes classes/week for 1,250 Yuan/week. I teach around 1,000 students.
Bear in mind that my agent is not a philanthropist and that he's paying my rent of 125 Yuan/week as well as my assistant's salary of 300 Yuan/week. Any of you teaching direct for a senior high in China can do the math. Now you can work out if your school head is screwing you over because you know the minimum that the parents of your students are paying your school for your services!
Incidentally, this next part is especially for you uni and college teachers who like slagging off Chinese teaching assistants. Don't bother doing so if you reply to my post. I mean it! My teaching assistant is an absolute doll who goes out of her way to assist my teaching as an interpreter in class. However, I feel sorry for her because of her lousy pay checks. I regret the advent of colder weather here - she's no longer in a mini-skirt or a pair of hot pants, both of which expose her very shapely legs when she's wearing her dark sexy tights!