Generally speaking, the college entrance examination instructor of simple education will lead a group of 5- 10 to review, which can effectively use time and energy and make students get better guidance. In addition, students in the group can also help each other, communicate and learn, so that everyone can better understand the content of the college entrance examination. Therefore, it is very important to have an appropriate group size. Only by helping students with professional skills and solutions can we truly achieve the success of repeating the college entrance examination.