Most employers judge a person by his college, not whether he is smart or not. First, most college students join club activities and spend much time with club members. They go out downtown after school. It is common to go drinking or karaoke. Second, it's easy to get credit, which means that it's easy to graduate from college.
Students just listen to the teacher's lecture.
Some students are talking with friends, sleeping or talking on their cell phone during the class. This is becoming a college problem. The other thing is that many teachers don't check attendance. I don't care whether you attend the class or not. If you take the final exam, you can pass the class.