Central Board Of Secondary Education [CBSE] — Marks scored in chemistry

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kollam

My daughter Niranjana s pillai has scored 97% in X th (best of three method) and 91% in XI th in chemistry. But her mark in XII th Board for chemistry is 82 with B2 grade .ie, 52 marks in theory it is only 74%. As per the uploaded calculation of CBSE at any case it should not be less than 91%. Please do the needful to rectify the same.
School : Chavara Public School pala kerala affln no :930264