The blog presents a real-world anonymised example of a secondary school which has eight “feeder” primary schools. In one of these “feeder” primaries, which is rated outstanding, pupils achieve high grades at key stage 2 but then underperform at key stage 4. Looking at this data in more detail, even when other factors are taken into account (such as socio-economic status or background) the pupils who came from that specific feeder primary make significantly less progress than their peers with little explanation as to why.
According to the Education Datalab, this should raise questions around the reliability of the key stage 2 results coming from that specific primary school and, potentially, whether any malpractice took place in the administration of the primary SATs. Overall, the blog concludes that “both DfE and Ofsted … [should] … consider making adjustments for pupils who attended primary schools with anomalously high KS2 results”.