Work out your attendance percentage, how many classes you can still miss, and how many you must attend in a row to get back above 75% or 80%.
Most universities and colleges in Pakistan won't let you sit the final exam if your attendance is below 75% (some require 80%). Being “short” by two classes is a painful way to lose a semester, so it pays to know your numbers.
Attendance percentage
Attendance % = classes attended ÷ classes held × 100
Example: you attended 31 of 40 classes. 31 ÷ 40 × 100 = 77.5%.
How many classes can you miss?
If you're above the limit, you can miss classes until attended ÷ held drops to 75%. With 31 of 40 and a 75% rule:
- Miss 1 more: 31 ÷ 41 = 75.6% ✓
- Miss 2 more: 31 ÷ 42 = 73.8% ✗
So you can afford to miss only 1 class now. The formula is: classes you can miss = floor(attended ÷ 0.75 − held).
How many classes do you need to attend?
If you're below the limit, you need to attend classes in a row until you're back up. Suppose you attended 26 of 40 (65%). You need x more classes where (26 + x) ÷ (40 + x) ≥ 0.75. Solving gives x ≥ 16. You must attend the next 16 classes without missing one.
The general formula: classes needed = ceil((0.75 × held − attended) ÷ 0.25). For an 80% rule, use 0.80 and 0.20.
Plan for the whole term
If you know how many classes are left, you can plan ahead. With 20 classes left and 31 of 40 done, the term will have 60 classes. 75% of 60 is 45, so you need 14 more of the remaining 20: you can miss 6 over the rest of the term, spread out however you like.
| Classes in term | Needed at 75% | Needed at 80% |
|---|---|---|
| 30 | 23 | 24 |
| 45 | 34 | 36 |
| 60 | 45 | 48 |
Use the calculator
The Attendance Calculator shows your percentage, how many classes you can miss, or how many you must attend, for any minimum. Add the classes still to come to plan the whole term. Then use the Final Exam Calculator to see what you need in the final, and the Study Timetable Generator to plan revision.
Tips
- Count lab sessions separately if your university does.
- Keep your own record; portal updates can be late.
- Save your misses for illness and emergencies, not the first weeks of term.