If you want to apply for classes because of exams, such as CET-4 and CET-6, postgraduate entrance examination and GRE IELTS. In fact, the goal is very clear and there is not much selectivity. If it is a remedial class or something, there are only a few large ones on the market, and you will definitely not consider the small ones. Then choose one that is convenient for you and at the right price.
If you want to enroll in remedial classes instead of taking exams, you can look at your weakest link and enroll in remedial classes. For example, what you want to conquer most is spoken English. Then go to oral English remedial classes, and start with those familiar institutions in the market to find their corresponding courses. Look at their courses and teachers. Generally speaking, the more small classes, the better the quality. In other words, if you want to make such a big breakthrough in a short time, it is recommended to teach in small classes, so that teachers can focus more on you.
Of course, small class teaching is elite teaching, and the cost will be higher. Therefore, we should consider our own budget goals and the points to be broken at present, and choose the appropriate remedial classes.
Finally, I want to explain that no matter what kind of English class you enroll in, you still have to practice on your own. The role of teachers and classmates is to provide methods and create an atmosphere. In the end, we must rely on our own practice to consolidate, so as to absorb what we have learned and become our own.