Beifu has never used a unified textbook. When you meet a teacher in class, you may buy textbooks recommended by the teacher. You don't have to buy it Anyway, teachers prepare lessons collectively. In other words, no matter which teacher attends class, the content of the lecture has been set by the school, which avoids different teachers teaching the same class and the results are different. However, teachers can focus on different topics according to their own preferences and professional knowledge.

We were in five classes at that time, and the level of postgraduate entrance examination was immediately clear. Because the level of teachers will still be different.