Teachers generally don't care. Because there will be more than 60 students in a class in a university, usually one class a week, the teacher will never remember each student's face in a short period of 17 weeks, unless he takes the initiative to speak, he can communicate with the teacher at any time. So even if teachers want to manage, their ability is limited. After all, teachers should focus on teaching rather than managing students.
Some teachers like to call the roll because they are strict with students and classes and are responsible for students. Such teachers generally have their own rules and teaching system. Some teachers don't swear casually, but focus on teaching and imparting knowledge. After all, the time and number of students in a class are limited, and teachers have a lot to talk about. Therefore, whether to call the roll depends on the teacher's requirements and what the focus is.
Many students prefer to spend all their time playing instead of going to class, which is a common problem in universities now. After all, universities don't want to teach in small classes like high schools, and there are no teachers in charge. Universities cultivate self-control and independence. Universities don't need to take exams every month, as long as they pass the final exam. So some people think it's enough to recite the questions at the end of the term, and they don't care so much about their studies. Of course, some people recite some questions in class and prepare their own examination certificates. Listening to classes depends entirely on your own consciousness.
Most people who are willing to do well in class are principals. Good performance in class can leave a good impression on the teacher, and the teacher will give you a higher score at the end of the term. For example, our school grades students who answer questions in class, and each score has an impact on your final grade. At the same time, you can gain knowledge by doing well in class. The content taught by teachers is far richer and more profound than that in books. In fact, we will gain more by listening carefully in class, because the teacher gives us a way of thinking, not just knowledge points.
So universities are places to cultivate self-control and independence. In college, you can skip classes everywhere, enrich your knowledge, broaden your horizons and learn more. It is best to be able to achieve a multi-functional state.