There are two major reasons for failing in the exam. The first reason is stress. It decreases sudents' self confidence . Therefore , they may have a fear of failure before the exam. Moreover, they cannot concentrate and make mistakes during examination. Because of this, they fail the exam. The second reason for failing the exam is that mostly students don't have a goal. These students waste their time on unnecessary things. For example , they are playing computer games those days continuously. They are also watching  too much television. Therefore, they ignore the lessons , teachers  and their warnings, homework whatever important for them. As a result of this, they miss classes and cannot pass the exam. To sum up, having a stress and not having a purpose are the reasons for why the students fail the exam.