In principle, the performance appraisal is conducted by combining the usual assessment with the final assessment, with the final score accounting for 70% and the usual score accounting for 30%. The core courses must be tested, and the scores are recorded with a percentage system. Other courses can be conducted through examinations, assessments and course papers. , and the score can be a percentage system or a hierarchical system, which is divided into five grades: A, B, C, D and E.