Some people say that students can study on their own without having to attend the professor's lecture by going to the library, having group discussions or consulting with their acquaintances. However, I strongly believe that university students need to attend their class to raise the quality of the skill
First of all, the professor knows more than what we should study in that class, and the professor prepares for the lectures with their best efforts so that the class deserves to attend. At least, we should take part in the class and make a suitable atmosphere for studying. If many students is absent to the class due to personal schedule or their self-study, the other students who remain in the class would feel emptiness in a big classroom and they are interrupted by absent students. To attend a class is as a minimum manner as a classmates and a student.
In addition, as a student, to have an admirable job in a few years, they have to get good grades either. It is helpful to write down some important things from professors saying and they can raise their hands if they have a question about troublesome. Attending a class regularly is helpful to prepare for midterm and final term exams, because to catch what the professor emphasizes is obviously important to students to get a fine grades enough to satisfy.
Although, university students have freedom in living with their schedule, I rather recommend them to have a regular life to have a sound, ordinary and healthy life in their busy life. It seems that to wake up early, go to university and take part in a class is a pressure and stressful, but if we are adapted to it, to join a class is helpful not only for our regular schedule but also for the awakening effect. Students should have good competitors to raise or study steadily with their tough concentrations.
For all these reasons, I would like to the opinion that university students should be required to attend class than going to classes for their option. Although university students can enjoy their freedom to attend a class, I believe that to be in a class and listen carefully what the professor says and share many opinions with the classmates will compensate their attendances at least more than their self-study.