Ben Fuller, Lead Assessment Adviser at Herts for Learning

Yesterday saw the release of the KS2 Performance Tables (based on validated data). You can find the figures for any school in England here.

This means that anyone can look up your school and see inspiring data such as this:


To the casual glancer, this chart might appear to suggest that this particular school has achieved progress scores somewhere around the median. But beware, that middle section covers around 60% of schools, so what the image above actually shows is data that could be anywhere between the 21st and 80th percentiles.

The greater surprise, though, in exploring the validated data is that an unexpected  methodological change has taken place since the unvalidated data appeared in RAISEonline. This change applies to one very specific group of pupils – those pupils who were entered into the tests (reading and maths) and who failed to score enough marks to be awarded a scaled score.

In the unvalidated data, these children were excluded from the progress data (but included in attainment). (However, where children were not entered into the test because they were working below the standard of the test, their Pre-Key Stage standard teacher assessment was used instead and those children were included in the progress measure.  This seemed counter-intuitive, in terms of setting up a strange incentive for schools to enter children into a test in which they clearly were unable to achieve.)

Here’s the change: now those children have been included – provided the teacher assessment is one of the Pre Key Stage standards (PKG, PKF or PKE). If you had children who took the test and didn’t achieve a scaled score, and the teacher assessment was either PKG, PKF or PKE, your progress score will almost certainly have gone down.

If the teacher assessment for such children was HNM (Has Not Met the standard) then those children are still excluded from the measure – so the progress score should be unaffected. (This is a strange anomaly in the system. It would make more sense to me in such cases to award the same score to HNM that is used for PKG (79 points) rather than remove such a child from the progress measure altogether.)

So, if you had children who sat the KS2 tests but did not achieve a scaled score – check your validated data progress scores on the Performance Tables site. They might be different to the figures you have already been looking at in RAISEonline and Inspection Dashboard. (Both of these documents will be updated to the validated data at some point in the Spring.)

The intricacies of the KS2 progress model are very well explained in this excellent blog by James Pembroke (aka ‘sigplus’). Thanks James for bringing my attention to this methodological change via the medium of Twitter!