In fact, it is very simple to improve students' personal information. We can follow the following steps: 1, enter the nail and click on the class group. 2. A prompt will pop up on the page, and click Perfect Now. 3. The location will be automatically located, and click on the class level. 4, the page pop-up options, click on the real grade of the class. 5. Then click Save. 6. The page will pop up the improved class information, click I know.