An attendance percentage today does not tell you how many future classes can be missed. To answer that, you need the final number of classes expected to be held.
The Future Absence Allowance uses current held and attended counts, remaining classes and your entered final requirement. Its result describes a count scenario, not permission to take leave.
Use a realistic remaining class count
Enter sessions still expected before attendance is finalised. Do not substitute remaining calendar days. A day can contain several sessions, no session or a cancelled class.
The calculation assumes every entered remaining class will actually be held. If the timetable changes, recalculate. A different final denominator changes the minimum attended count.
Keep separate course registers separate. One course with strong attendance does not cancel a shortage in another course unless an official rule explicitly combines them.
Thirteen to attend, seven to miss
Suppose 40 classes have been held, you attended 32, and another 20 are expected. The final total will be 60 classes.
At a 75% requirement, you need at least 45 attended classes by the end. Since 32 are already recorded, another 13 must be attended. That leaves seven of the 20 remaining classes that can be missed under this count model.
If you miss seven and attend 13, final attendance is 45 out of 60, exactly 75%. Missing eight instead would leave 44 out of 60, below the entered requirement.
Why zero allowance can have two meanings
A zero miss allowance may mean every remaining class must be attended to satisfy the threshold. It can also mean the threshold is already unreachable within the remaining course.
Read the accompanying note and required future attended count. If that count exceeds the number of remaining classes, even perfect future attendance is insufficient under the inputs.
The tool also shows final attendance if every future class is attended. That gives a useful upper limit for the fixed course plan.
Recheck before relying on the allowance
A class that has already been missed belongs in held classes, not remaining classes. Moving it into the future would make the plan appear more generous than the actual record.
Administrative rules may require attendance in a particular component or restrict absence for other reasons. The calculator cannot approve an exemption, leave request or examination entry.
For several courses at once, use Subject Attendance Forecast and enter the planned future attendance for each. Keep a small buffer if the remaining timetable is uncertain, but choose that buffer yourself rather than treating the calculator’s maximum allowance as a recommendation.