Attendance calculator
Your attendance percentage, and how to stay above 75%
Type the classes you attended and the classes held so far. The example is 50 out of 62.
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- Attendance now
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- What it takes
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- After that
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A guide. Your school's or college's own attendance rule and records decide, including any medical or sports allowance.
How the numbers are worked out
Attendance is the classes you attended divided by the classes held, times 100. 50 out of 62 is 50 ÷ 62 × 100 = 80.65%.
Classes you can miss
If you are above the target, the page finds the most classes you can still miss in a row and stay at or above it. Missing a class adds one to the classes held but nothing to the classes attended. For a 75% target that is (100 × attended − 75 × held) ÷ 75, rounded down: (5,000 − 4,650) ÷ 75 = 4.67, so 4 classes. After missing 4 you would be on 50 out of 66, which is 75.76%. A fifth would take you to 74.63%.
Classes you need to attend
If you are below the target, it finds how many classes in a row you must attend to reach it. Each one adds one to both numbers. The sum is (75 × held − 100 × attended) ÷ 25, rounded up. At a target of 100% you can only reach it with no absences at all, so the page says so.
Which target to use
CBSE's examination bye-laws (rules 13 and 14) set 75% attendance for Class 10 and 12 board exams, with set exceptions. Colleges and universities make their own rules, which can count labs, tutorials or medical leave differently. Type your own figure in the target box.