DNA Explainer: What is CBSE’s 30:30:40 formula to evaluate Class 12 Board exam results?

With the Supreme Court’s in-principle clearance, CBSE’s innovative assessment formula will now determine the future of around 14.5 lakh students

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DNA Explainer: What is CBSE’s 30:30:40 formula to evaluate Class 12 Board exam results?


Based on feedback from 7,734 schools, the Central Board of Secondary Education (CBSE) has come up with a novel formula to assess the final marks of Class 12 students after COVID-19 forced cancellation of physical Board exams.

The assessment for each student will be two part — theory and practical.

The practical assessment will be on the “actual basis” of the marks that schools upload on the CBSE portal. The scheme says that the total marks awarded should be in accordance with each school’s CBSE Class 12 Board exam performance in the past.

The theory component has been rethought with a new formula.

CBSE’s 30:30:40 theory assessment formula

Students will be assessed for marks they have obtained over the last three years.



Marks obtained in their three best performing subjects out of a total five in Class 10 will carry 30 percent weightage. Students' performance in the final theoretical exam they took in Class 11 will determine the marks that will be given another 30 percent weightage.

The final 40 percent weightage will come from the marks that students got in Class 12 in “one or more unit tests, mid-term exams and pre-board exams.”

Under the principal’s guidance, each school will form a committee to prepare the result by following the policy guidelines. Two postgraduate teachers from neighbouring schools will join two of the school’s senior-most postgraduate teachers in this result committee.

A CBSE helpdesk will assist these committees in their task. The Board will also provide software support needed to prepare the result.

The Class 12 results will be declared by July 31, 2021, as per the CBSE.

Dispute resolution

Candidates not satisfied with the assessment prepared as per the policy will have the opportunity to appear for exams which the CBSE will conduct once the environment is “conducive”.

The Apex Court has told the CBSE to incorporate provisions for dispute resolution in the new assessment scheme for students who want correction in the declared result.

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