Central Board Of Secondary Education [CBSE] — Reducing my daughter's marks in CBSE class 10.

Sir, what I thought better not to appear the improvement exam, better to boycott it for my daughter, because after a long 4 months gap no one can regain the original flow of study and retain its original marks. She secured less than 90% which she never got in her class 9, 10 half yearly and preboard exams. It is the negligence of the school where she studied and the affiliated schools under which it is running to send the accurate marks what she deserves. So, Sir, please do something favour of my daughter so that she atleast can regain her 90% marks. Thank you.