class rating

例句：

1. 1. The teacher gave a class rating of A for the student's excellent performance.
   老师给这个学生的优秀表现打了A的等级。
2. 2. The students were given class ratings based on their academic performance.
   学生们根据他们的学术表现被给予了等级。
3. 3.The class rating system is used to evaluate student progress and achievements.
   班级评分系统是用来评估学生的进步和成就的。