This is the most convenient and accurate method. But it is also a way to wait, that is, go back to school to inquire, and the school programmer will accurately tell you whether you have passed Band 4.
However, students are not at school during the summer vacation, so it takes a waiting process, but fortunately, because the school year is approaching, students will know their grades when it starts. Otherwise, you won't know your CET-4 score until the school sends out the CET-4 report card.
If you learn the letter network, you can follow the navigation step by step.