From the perspective of students, I think it is necessary to say a few words for contemporary college students. Teachers often say that today's college students are all low-headed, don't study hard, and don't like learning as much as former students. But it is true that sometimes the courses are very boring, which leads to many students' desertion in class, which is one of the reasons for the large number of substitute classes.
What's more, most of the ladder courses in universities have a large number of people, and the teachers don't know everyone's names. However, each teacher's management style is different, that is, roll call, and the credits of the corresponding courses will be deducted by more than half. When taking elective courses, the teacher directly explained the grading standard of elective courses in the first class, and it was not allowed to pass if the roll call was not more than five times.
In order to pass the exam, I don't think it's necessary for the teacher to write a check because I skip class. At the same time, the substitute students can make some take-away money in their spare time. Why not? Substitution is sometimes not so serious, it is a rule loophole that students find under the oppression of the system. Of course, if you always find a substitute class or take classes for others, it will be a bit too much.