The range of grades is the same as excellent, good, medium and poor, and the standard of 1-2 grade is different from that of grades 3, 4 and 5. Since it is graded, it is not graded, and it is also inseparable from the teacher's subjective impression, but it is basically based on the following standards.

Grade 1-2: Grade A is above 90; Grade b above 75; Grade c, above 60 points; Class d, below 60. Grade 3-5: Grade A above 85; Grade B is above 70; Grade c, above 60 points; Class d, below 60.