Qingguo system teachers can change grades.

The Qingguo system is an education management platform where teachers can enter students’ scores and make modifications. According to the instructions for use of the Qingguo system, teachers can enter, modify and query students' scores in the system. Therefore, Qingguo system teachers can change grades.

Although Qingguo system teachers can change grades, it should be noted that the modification of grades should be based on objective facts and cannot be tampered with at will.