Chang'an University's postgraduate entrance examination score calculation method is based on the weighted total score of the candidates' scores in the subjects they applied for, as well as the credits and grade points of the subjects they applied for. The specific calculation method is: total score ÷ (credits × grade points) × 100. This is because Chang'an University believes that the credits and grade points of the subjects applied for are important indicators to measure the candidate's learning ability, while the total score is only a simple indicator of the candidate's learning ability.