Central Board Of Secondary Education [CBSE] — Fraud result made by Bradford International School Karmali Chak Patna Bihar

I am a student of class 12th session[protected] Bradford International School Patna, i have scored 84% in class 10 from cbse ... this year in class 12th i got only 58% marks, not only me about me but almost all students except son/daughter of teachers of that school got bad marks instead of giving examination of class 11th and 12th . we were demanded money by the school for giving marks in std 12th, we could refuse as it was matter of our career . we were forced to pay the amount to school.
as per our result any one can say that cbse criteria was not followed by the school. they had given marks on their own as they have conducted 11 and 12th examnitaion after the cancellation of cbse class 12th exam officially. the school authority has played with our future.
i am not even eligible for taking higher education in any decent college/university. thereby i sincerely request the CBSE AUTHORITIES to look into this matter sincerely and take some action for us as soon as possible.