In Xiamen's Junior High Mid-term Exam, a score of 90-100 typically counts as an A. This grading standard is consistent with the national education system in China, which emphasizes high academic achievement. According to the Xiamen Education Bureau's official guidelines, the top 10% of students in each class are usually awarded an A grade. This policy is designed to motivate students to strive for excellence and to recognize those who excel academically.

The rationale behind this grading system is rooted in the Chinese educational philosophy that values academic rigor and achievement. Data from the Xiamen Education Bureau indicates that the average passing score for the mid-term exam is around 60-70, with an A grade reserved for the highest-performing students. This approach ensures that only a select few receive the highest accolade, making it a significant achievement for students to attain an A grade. Additionally, the grading criteria are standardized across all schools in Xiamen, ensuring fairness and consistency in evaluating student performance.