Central Board Of Secondary Education [CBSE] — 12 Result dissatisfaction

Address:

Nagpur, Maharashtra

Sir/Mam, I am Hrutuja Dhawale and I'm not satisfied with my percentage in 12th. I got 90.4% in 10th and now my school has not given proper marks to me and I got 75.6% in 12th. Whereas, other schools gave proper and even more marks to their students who were less deserving than me.
My Roll no : 15613029
My school code : 30073
My school name is St. Xaviers High School, MIDC Hingna, Nagpur
Please do something regarding this...this is unfair.
My school gave unfair marks to me. My school has given proper marks to the students of their school who were already in their school from 10th.