1, different definitions: failing a course and repeating a grade means that students need to retake the course and take the exam again in the next school year; Demotion refers to the fact that students fail to reach the passing scores stipulated by the school in many courses, resulting in insufficient credits and unable to advance to the next grade.
2. The learning content is different: if a course fails, you need to re-learn the whole grade when you fail, and only need to re-learn the failed course when you are demoted.
3. The time cost is different: it takes a lot of time to repeat the whole grade course; However, demotion only requires re-learning failed courses, and the time cost is relatively low.