Central Board Of Secondary Education [CBSE] — Bad result of my class 10

Hello Sir, I am Prince Raj from class 10 th, Roll no. 22257592, school no. - 65385. Sir I m not satisfied with my 10 th result especially in Math and Science . My pre - board exam was very good but i get only 59 marks in Math, 63 in Science and also only 75 in English. My school teachers didn't announced the pre board result and given bad marks to us in final exam not only me but many of my friends are also not satisfied with the result