AtlasCalc🎓 EducationbeginnerOffline
Attendance Calculator
How many classes can you miss given an attendance policy?
Inputs
Enter your values below.
Result
Your answer appears here.
Enter values and press Calculate — the result appears here.
How it works
The formula behind this calculator.
attendance% = present / totalSessions × 100
- present
- Number of sessions attended
- totalSessions
- Total number of sessions held
Most schools require 75–80% to pass. Some weight excused absences differently from unexcused ones.
Example: Present 27 of 30 → 90% attendance
Ref: Each institution's attendance policy
Tips
- 💡 Most schools allow 5–10% absences before grades are affected. 75% is the typical minimum-pass mark.
- 💡 Doctor's notes and excused absences may or may not count, depending on the policy.