text: The third reason is that it also affect on students grades and in the future they can not attend their favorite college. They won't able to understand the lesson, they will get bad grades in all subjects. It is so important to attend the classes at school, then you will know what is going on. students can ask teachers if they are having problems in their lesson. teachers can help them during school timing or after school. It will be easy for students to understand or to pay attention and they can get good grades too in all their subjects.