Extremely stressfull environment to work in. Incredible staff turnover. One of the biggest problems was the course consultants demanding you do exactly what the parents wanted. Even if this demand went against the student's best interests, e.g. Putting a student in a class that was not suitable for their level because their parents think their child is a wunderkind or because they didn't like a certain teacher. This was done a number of times without the students being tested. I protested this to no avail. This of course led to all sorts of problems in class.
Another problem was as soon as the ccs/ management find out you are a good/ popular teacher you will find your schedule jampacked and your classroom filled up with students. This would not be a problem if you didn't see other bad/ unpopular teachers sitting back in the office with fewer classes and getting paid just as much if not more depending on how long they have been there.
One of the other problems was the staff rooms for teachers, they used to be so cramped, uncomfortable and hot in the schools I worked in. This led to teachers having arguments with each other and ccs, etc. I saw so many arguments in different schools, and a good few local/foreign managers fired.
During an open door the parents will come and observe your class if you do well most parents will pay for another course if not your cc will be very unhappy with you because they get commission for every student that stays for another course. You as a teacher get nothing extra. The pressure some new teachers are under during these open doors is huge. The pressure coming from management and ccs.
Summer and winter courses are intense. Be prepared to work from 9:00 AM to 9:00 even 10:00 pm on weekdays and your normal 9:00 AM to 6:00 PM on weekends. But don't worry you will have no office hours during morning and evening classes during summer course. This is just management saying we don't have to pay you between morning and evening classes because you have no office hours. You are still expected to do lesson plans, correct tests etc. It's a complete joke. In one school I worked in 80 percent of teachers quit just before summer course. They couldn't take it anymore.