Why student fail in exam?

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

1. Sundays-52, Sundays in a year, are rest days. Balance 313 days.
2. Summer holidays-50 where weather is very hot and difficult to study. Balance 263 days.
3. 8 hours daily sleep-means 122 days. Balance 141 days.
4. 1 hour for daily playing-(good for health) means 15 days. Balance 126 days.
5. Two hours daily for food & other delicacies (chew properly & eat)-means 30days. Balance 96 days.
6. 1 hour for talking (man is a social animal)-means 15 days. Balance 81 days.
7. Exam days per year at least 35 days. Balance 46 days.
8. Quarterly, Half yearly and festival holidays)-40 days. Balance 6 days.
9. For sickness at least 3 days. Balance 3 days.
10. Movies and functions at least 2 days. Balance 1 day. That day is student’s birthday.

Now tell me that how can a student pass?