In fact, I personally feel that the remedial class is not effective. The teacher may teach you some knowledge that can't be taught in school, so that you can have more advanced and faster problem-solving methods when solving problems, but it is very limited, and it is difficult to use what you learned in school in the future.

Instead of going to a remedial class, try to develop your brain power. By changing the way of memory and logic, you will not only be helpful to a subject, but also make all your studies faster and remember for a long time, and help you remember something later.