The difference between the chalk postgraduate entrance examination system class and the whole class lies in the price and whether there is the function of inspector. Judging from the relevant information, the whole class may explain the course with the function of inspector more carefully. The most important thing is to have a teacher to urge you to study every day. Prices range from 3000 yuan to 7000 yuan. The system course is divided into three stages: theory intensive lecture+module brushing+examination paper brushing. You can use your mobile phone and tablet to take classes, with free schedule and cheaper price.