All NFER Tests provide both age-standardised and standardised scores. In addition, summer tests provide age-related expectations.
Standardised scores: These are based on a normal distribution of scores with a mean (average) of 100 and a standard deviation of 15, meaning that about 67% of pupils will achieve a standardised score between 85 and 115. The scaled score of 100 defined by the Department for Education as the national expectation at the end of Key Stage 2 is not the same as, nor equivalent to, a standardised score of 100 on NFER Tests.
Age-Standardised scores: At primary school older pupils in the year group typically have slightly higher average raw scores than younger children in the year. NFER’s age standardisation takes this into account by enabling you to compare a pupil with other pupils of the same age (for example in years and months) on the test.
Age-related expectations: The result from the summer reading or mathematics tests contributes to the judgement of whether a pupil is meeting the standards expected in the national curriculum. A series of standard setting meetings involving over 100 teachers provided evidence about the challenge in these tests in relation to the national curriculum expectations. Using a method known as bookmarking, teachers used their expertise and understanding of the curriculum to define expectations for each year.