Central Board Of Secondary Education [CBSE] — Biology and chemistry

Respected sir/ mam,
I want to complain about my biology no. I’ve got only 24 marks out of 70 added with my practical numbers which is 30 conducted by appointed biology teacher is total of 54 marks which is I am not satisfied with because I’ve got 97marks out of 100 in term-1 and 75 marks out of 100 in term-2 in 11 class and as well as in 10 I’ve got really to marks. and I’ve got 54 marks out of 70 in 12 pre-board. So I want you to plz kindly do something with my marks.and in chemistry I’ve got 92marks out of 100 in term1 and 97marks out of 100 in term2 in class 11 and the result which I’ve got is really unexpected The result which was expected according to the marking pattern of CBSE did not come at all.
And when we complaint it to the school principal/ director they are not giving us proper reason.
SCHOOL NAME- Ghazi Learner’s Academy
Tajkhanpur Sultanpur (UP)
SCHOOL CODE-71258
Plz consider my complaint it’s my humble request.