How do the KPIs on My Homepage work?

Your homepage on the School MIS gives you key figures about attendance, behaviour and assessment attainment at your school and for your students. This article will provide details on what the Key Performance Indicators (KPIs) are, and how they are calculated. See more details in our guidance on My Homepage.

For your homepage on the MAT MIS, please see our guidance here: My Homepage on the MAT MIS


You'll see 7 attendance KPIs, which provide an overview of all currently enrolled students' attendance today compared to this year so far.

The figures on your School MIS homepage show:

  • Current Enrolment - the total number of currently enrolled students today
  • Attendance - a percentage statistic for present, counting all the students at your school no matter their age or if they are guest students
  • Statutory Attendance - a percentage statistic for present, only counting students who are statutory school age who are not guest students
  • Authorised Absent, Unauthorised Absent, Late - a percentage statistic for authorised absence, unauthorised absence and late, counting all the students at your school no matter their age or if they are guest students
  • Persistent Absentees - called DfE Whole Year because this is set based on the DfE's definition of persistently absent for the year to date

You can also see National Average and National Percentile data to compare your attendance with other Arbor schools: Live National Benchmarks on My Homepage



How do the attendance calculations work?

Today or Prev 7 days:

  • We'll show data for the last 7 days when there isn’t any statistical attendance for the day, either because a holiday is in place, or attendance hasn't been taken yet.
  • Once registers are opened and have been taken, you'll see data for Today.

Students counted in the Statutory metric are:


Four KPIs which provide an overview of students' behaviour. The figures show:

  • the number of behaviour points given this week alongside the weekly average for the year so far
  • an average of the number of incidents per week this year as well as this month and this year
  • days lost to suspensions this year compared to last year on the same date
  • permanent exclusions this year compared to last year on the same date


Three KPIs which provide an overview of students' attainment.

These figures show the percentage of students (who were enrolled at any point during the current academic year) who are above, at or below their targets in all summative assessments. Blank marks and not required marks are not included in the calculations.

Top Tip: If you don’t use Assessments in Arbor, these fields will be blank.


Filter and drill down into your KPIs

Hover over a KPI to view more details, or click any KPI to see further breakdowns.

example drill down.png


You’ll be taken to a new page listing academic groups, custom groups, and demographics, with the corresponding statistic for the selected KPI.

  • Use the filters at the top of the page to only display students in a certain student group or demographic.
  • Filter the list to only show certain student groups, such as registration forms, or show the data for each individual student using the buttons at the top.
  • Change how the list is ordered by clicking a column header, e.g. to see the group with the highest average across the year.

example attendance drill down.png


The figures look wrong

If the figures don't not match your expectations, check the groups you're taking a look at. In the example below, the figure for Female is 81.3% and the figure for male is 87.7%.

You might expect the overall figure to be. 84.5%, because you can average these two numbers. However, this method would be incorrect.

  • Adding the figures together and dividing by the number of groups will not give the correct figure.
  • You would only reach a figure of 84.5% if both groups had the same number of students, and the same number of attendance marks.

Arbor calculates the weighted average of 84.2%. This is because the group with more students/more marks will have a bigger impact on the overall average, so the overall school attendance figure might not be exactly in the middle of the averages.

example whole school.png


You may also see an overall figure lower or higher than all the figures in the drill down. This happens because:

  • the main KPI includes all students who have had an enrolment today or this academic year.
  • The drill down only considers students who have an active enrolment today.

Screenshot 2023-12-05 at 12.31.33.png


As such, we wouldn't recommend comparing the figures here. However on the Attendance Statistics page, you can set any date range you wish, group your student data, and choose to exclude students who have left: Viewing statistics for attendance

Screenshot 2023-12-05 at 12.28.54.png

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Can we change the KPIs?

Please note that it is not possible to change the KPIs or how they work: Can I change the KPI measures or edit the dates on My Homepage?

Can we print the charts?

Please see our guidance here: Can I print the out-of-the-box graphs and charts in Arbor?

What does calculation and considering mean?

Hover over a KPI to see more information about the numbers contributing to the calculation. For example, for attendance:

  • Calculation - this figure tells you how many roll call attendance marks your figure is based on.
  • Considering - this figure tells you how many students your figure is looking at attendance for.

In the example below, you can see there are 1012 students, and 1017 attendance marks. 922 of these 1017 marks are present marks.

You'd expect the number of marks to be similar to the number of students in the AM once attendance is taken, and around double the number of students in the PM once attendance is taken. This is because your students have two roll call periods per day. This will of course be slightly different if you have students on a reduced timetable and they don't attend for a roll call session.

The example below shows attendance after AM roll call. It shows 1017 rather than 1012 because there was a register for the afternoon opened early by adding an absence from the Bulk Edit Marks page.

calculation example.png

How does the colour-coding work?

Figures for the previous year are coloured blue.

For the YTD figures, the thresholds for the colours aren't based on statutory guidance, but can be used to highlight changes. We recommend focussing on the actual numbers for your reporting (such as for Ofsted).

For example, for attendance:

  • Below 80% - Orange
  • 80% and above but below 90% - Yellow
  • 90% and above but below 95% - Green
  • 95% and above - Dark green

Please note that it is not possible to amend the thresholds.

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