Hello Aman,

Boards do give a lot stress to students but first you have to understand it's mot the end of the world if you do not do good in the exams especially in Indian Education System.

Now, if we talk about checking criteria of CBSE, first wise step should be to check the marking scheme of CBSE in their Sample paper of maths that will give you a more clearer perspective of how you performed in your exam. The CBSE checkers are human and they do have some sympathy for people just failing by a very small margin so if your guess is right of getting 27 to 30 in Exam there are some chances that you can pass the exam. Most of the students tally the marks according to how they are checked by the school teachers but let me tell you one thing that the the CBSE papers are not checked that strictly if the paper was difficult but if the paper was easy then there are chances that it will be checked a little strictly. Refering to experiences of many students in past, there are students who were actually afraid like you but got a better result than expected do don't worry and hope for the best. Instead you should use this time productively and learn some new skills that will give you a little more confidence and courage to face the results and don't stress yourself out spend some time with family and everything will come out to be right.

Good Luck !!!!