Central Board Of Secondary Education [CBSE] — Dissatisfied with my marks given in 10th board exam

Address:

Mokama 803302,Patna,Bihar

I 'm Shivam Sanidhya
School name:-Gyanasthali high School Mokama, Patna
I am totally socket when I got 64% marks in class 10th CBSE.
I am not satisfied by given marks because
I had got more than 80% in pre board examination.
Therefore, I request you to revaluate
my marks.
Thank you.
Roll no:[protected]
School no- 65182