CBSE (Central Board of Secondary Education) uses the Cumulative Grade Point Average (CGPA) system to calculate marks for classes 9 to 10 and grades for classes 11 to 12. Here's how the CGPA is calculated:
For each subject, your marks are converted into grades based on a predefined grading scale. The grading scale used by CBSE is as follows:
A1 (91-100 marks) - 10 CGPA
A2 (81-90 marks) - 9 CGPA
B1 (71-80 marks) - 8 CGPA
B2 (61-70 marks) - 7 CGPA
C1 (51-60 marks) - 6 CGPA
C2 (41-50 marks) - 5 CGPA
D (33-40 marks) - 4 CGPA
E1 (21-32 marks) - 3 CGPA
E2 (0-20 marks) - 2 CGPA
Once the grades are assigned for each subject, the CGPA is calculated by taking the average of all the individual subject grades.
CGPA is a 9-point scale, so the average grade obtained in step 2 is the CGPA. For example, if the average grade is 7, then the CGPA is 7.
It is important to note that CBSE also provides a corresponding percentage range for each CGPA value, which can be used to convert CGPA into percentage if required.
Here is the percentage range corresponding to each CGPA:
CGPA 10 - 95% to 100%
CGPA 9 - 85% to 95%
CGPA 8 - 75% to 85%
CGPA 7 - 65% to 75%
CGPA 6 - 55% to 65%
CGPA 5 - 45% to 55%
CGPA 4 - 35% to 45%
CGPA 3 - 25% to 35%
CGPA 2 - Below 25%
Keep in mind that this information is based on the CBSE grading system as of my knowledge cutoff in September 2021. It is always advisable to refer to the official CBSE guidelines or contact your school for the most accurate and up-to-date information regarding CBSE marks calculation and grading.
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