It is not recommended to go to cram school, which will increase the burden. After we enter the third year of senior high school, the teacher will re-explain the knowledge from the first year of senior high school. During this time, we must never slack off and must follow the teacher's teaching progress. In the third year of high school, you will be given some review materials, that is, the exercise books that you are required to complete after class. The teacher will usually explain against this review material, so you must finish the homework assigned by the teacher carefully. You can't ask a teacher just because you can't do it, even if the topic is simple and basic. You can't always be afraid of losing face.