Required Attendance Calculator

Find the extra classes needed to reach an attendance target. Enter your own values below to see consecutive classes to attend and check the method behind it.

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Your inputs

Change the example values to match your situation.

Your result

Let’s work it out.

Fill in your inputs and select Calculate.
Your result and breakdown will appear here.

How this calculator works

Solve (attended + x) ÷ (held + x) ≥ target. Round x up; assumes every future class is attended.

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What is Required Attendance Calculator?

Required Attendance Calculator helps you find the extra classes needed to reach an attendance target.

The main result is consecutive classes to attend, with a breakdown of attendance after these classes. The formula, example and assumptions below explain how to interpret it.

How to use Required Attendance Calculator

Use the example to get familiar with the form, then enter your own figures. Any rates in the example are illustrative. Check the field labels and units before calculating.

  1. Gather classes attended, classes held and required attendance (%). Use values from the same situation or reporting period.
  2. Replace the example classes attended with your own value, then complete the other fields. Check the displayed units.
  3. Select Calculate and read consecutive classes to attend with its result breakdown. Change one input and calculate again to compare a second scenario. Reset restores the original example.
  • Enter classes attended, at least 0 and at most 10000. Use a whole number.
  • Enter classes held, at least 1 and at most 10000. Use a whole number.
  • Enter required attendance in %, at least 0 and at most 100. Decimals are accepted.

Required Attendance Calculator: a worked example

With the inputs below, the result is 40 classes (consecutive classes to attend). Follow the example, then replace these illustrative values with your own.

Example inputs and output
Input or outputExample value
Classes attended65
Classes held100
Required attendance (%)75 %
Consecutive classes to attend40 classes
Attendance after these classes75 %

Understanding the Required Attendance result

Read consecutive classes to attend alongside attendance after these classes. These describe different parts of the same calculation.

Displayed results use a readable number of decimal places. When checking a result by hand, keep extra precision until the last step. To compare scenarios, change one input at a time and keep the others fixed.

  • Example Attendance after these classes: 75 %

Required Attendance Calculator: assumptions and common mistakes

A useful estimate starts with the right inputs. Check the following assumptions and limits before applying the result to your situation.

  • Grading factors, cutoffs and admission rules differ by institution and year. Compare the result with the applicable published policy.

For wider guidance, visit National Testing Agency. The formula and scope of this specific tool are stated on this page.

Required Attendance Calculator FAQs

What does Required Attendance Calculator calculate?

Required Attendance Calculator helps you find the extra classes needed to reach an attendance target. Its main output is consecutive classes to attend in classes.

What inputs do I need for Required Attendance Calculator?

You need classes attended, classes held and required attendance (%). Use the field labels and units to match your figures to the formula.

Which formula does Required Attendance Calculator use?

Solve (attended + x) ÷ (held + x) ≥ target. Round x up; assumes every future class is attended.

What is a worked example for Required Attendance Calculator?

Example inputs: Classes attended: 65; Classes held: 100; Required attendance: 75 %. The result is 40 classes (consecutive classes to attend).

How should I enter classes attended?

Enter classes attended, at least 0 and at most 10000. Use a whole number.

How do I choose classes held?

Enter classes held, at least 1 and at most 10000. Use a whole number. The example uses 100; replace it if your circumstances differ.

How should I read consecutive classes to attend?

Read consecutive classes to attend alongside attendance after these classes. These describe different parts of the same calculation.

Why might my Required Attendance Calculator result differ from my records?

Grading factors, cutoffs and admission rules differ by institution and year. Compare the result with the applicable published policy. Differences in entered values, units or rounding can also change the comparison.

Can I compare two scenarios in Required Attendance Calculator?

Yes. Note your first consecutive classes to attend, change classes attended or another input, and select Calculate again. Editing a field clears the old result so it is not mistaken for a new calculation.

Is Required Attendance Calculator free, and where are my inputs calculated?

This calculator is free to use without signing in. Its formula runs in your browser; calculator inputs are not sent to a calculation API. The inputs reset to the example values when you reset the form or start a fresh page.