Réponse:
Students come to class late.
When students come to class late, it can disrupt the flow of a lecture or discussion, distract other students, impede learning, and generally erode class morale. Moreover, if left unchecked, lateness can become chronic and spread throughout the class. Because there are a number of possible reasons students arrive to class late, considering which causes are at the root of the problem can help guide instructors to appropriate responses and strategies. Understanding the reasons, however, does not require tolerating the behavior.