Key Stage 2 National Test indicators: Wales
The CAT4 KS2 reports for Wales show estimates of the Literacy and Numeracy National Tests age-standardised scores as well as estimates of teacher assessment levels.
The table below shows the correlations between CAT4 and the Year 6 National Tests and teacher assessments. This is based on a study of around 2,500 students who completed CAT4 and the National Tests in Wales.
The correlations are all highly significant. The Mathematics and Science outcomes tend to have their highest correlation with the mean CAT4 SAS. The CAT4 Verbal Reasoning score alone gives a slightly higher correlation than the mean CAT4 score for Literacy, English and Welsh 2nd subject.