The first thing to understand is that if you don't sign up for work and don't pay, it means you don't have to work hard. Listening, speaking, reading and writing are added together. If it is 100 class, you are required to preview and review words for 300 hours. This is the background. Secondly, it doesn't matter which institution, the most important thing is that teachers are serious and responsible. So don't blindly follow the brand, go to school for audition. The teacher who requires formal classes should be the same person as the teacher you auditioned for. Many of our well-taught teachers went out early to go it alone. If you are surrounded by students studying IELTS, you can ask them which teacher is good. Good teachers are passed on by word of mouth.