Student Attendance Calculator
Calculate your cumulative attendance percentage, determine how many upcoming consecutive classes you must attend to reach 75%, or find out how many classes you can safely miss.
Student Attendance Calculator
Calculate your cumulative attendance percentage and determine how many consecutive classes to attend or how many classes you can afford to miss.
Attendance Standing & Projection
Attendance Mathematics & CBSE Bye-Laws
Classes Needed to Reach Target
When your current attendance is below target p (where p = Target% ÷ 100), each attended class increments both attended and total counts:
The result is rounded up to the nearest whole integer. For example, if you attended 60 of 100 classes (60%) and need 75% (p = 0.75):[(0.75 × 100) − 60] ÷ (1 − 0.75) = 15 ÷ 0.25 = 60 consecutive classes.
Permissible Absences (Buffer)
When your attendance exceeds the target, future absences increase only the total classes conducted, without changing attended classes:
The result is rounded down to the nearest whole integer. If you attended 90 of 100 classes (90%) and your target is 75%:(90 ÷ 0.75) − 100 = 120 − 100 = 20 classes.
Frequently Asked Questions
Under Rule 13 of CBSE Examination Bye-Laws, candidates must have completed a minimum of 75% attendance during the academic session to be eligible to appear for the Senior School Certificate Examinations (Class XII).