WHY DO STUDENTS FAIL?

WHY DO STUDENTS FAIL?
A year has 365days
Sundays:52
balance:313
summer holidays:50
bal:263days
8hours daily sleep means 122 days
bal:141days
1 hour daily playing means 15 days
bal:126days
2 hours daily food means 30 days
bal:96days
1hr 4 talking means 15 days
bal:81days
exam days total in year 35days
bal:46 days
festival 40days
bal:6days
4 sickness 3days,
movies & functions at least 2days,
balance-1day,
that 1 day is Ur birthday,
HOW CAN A STUDENT PASS? Think