Why students fail their exams?

It's not the fault of the student if he/she fails,because the year ONLY has 365 days.
Typical academic year for a student:


1. Sundays - 52
Sundays in a year, you knowSundays are for rest.
Days left 313.

2. Summer holidays - 50
where weather is very hotand difficult to study.
Days left 263.

3. 8 hours daily sleep - 130 days GONE.
Days left 141.

4. 1 hour for daily playing- (good for health)means 15 days.-
Days left 126.

5. 2 hours daily for food & other delicacies(chewing properly & swallowing) -means 30days
Days left 96.

6. 1 hour for talking(human is a social animal) - means 15 days.
Days left 81.

7. Exam days - per year at least 35 days.
Days left 46

8. Quarterly, half yearly and festival (holidays) - 40days.-
Days left 6

9. For sickness - at least 3 days.
Days left 3.-

10. Movies and functions- at least 2 days.
1 day left.

11. That 1 day is your birthday.How can you study on that day?!?!?!?!?!?!