Because the server capacity of the school educational administration system is not large enough, it has been impossible to log in. This situation requires multiple devices to be refreshed repeatedly.
Most colleges and universities arrange students to choose the courses they need to take in the next semester at the end of the semester, and with the popularity of campus networks, course selection is conducted online. Because all students log on to the same website at the same time, it is inevitable that the network will be congested and the class-grabbing war will break out.
Some teachers pointed out that online course selection does have incomparable advantages in the expansion of students' autonomy, the improvement of learning initiative and the active development of teaching activities. However, most students have become "slaves" of credits, and college students should learn to correctly handle the relationship between credits and knowledge.