National curriculum tests at the end of key stage 2 (KS2) (often referred to as SATs) are administered in mathematics, English reading and English grammar, punctuation and spelling.
We use scaled scores to report the results of these tests to ensure we can make accurate comparisons of performance over time.
A pupil’s scaled score is based on their raw score. The raw score is the total number of marks a pupil scores in a test, based on the number of questions they answered correctly.
Tests are developed each year to the same specification, however, because the questions are different the difficulty of tests may vary each year. This means we need to convert the raw scores pupils get in the tests into scaled scores, to ensure we can make accurate comparisons of performance over time.
A scaled score of 100 will always represent the expected standard on the test. Pupils scoring at least 100 will have met the expected standard on the test. However, given that the difficulty of the tests may vary each year, the number of raw score marks needed to achieve a scaled score of 100 may also change. For example, if the overall difficulty of a test decreases compared to previous years, the raw score required to meet the expected standard will increase. Similarly, if the test is more difficult, the raw score required to meet the expected standard will decrease.
In 2016, panels of teachers set the raw score required to meet the expected standard on each test. We used data from trialling the test materials and the live administration to maintain the standards for the 2017 tests.
The raw scores for each test are calculated by adding the scores from each paper for a subject.
|Test||Number of marks available in the paper||Total number of marks available for the test – highest raw score|
|English reading||50 marks||50 marks|
|English grammar, punctuation and spelling Paper 1: questions||50 marks||70 marks|
|English grammar, punctuation and spelling Paper 2: spelling||20 marks|
|Mathematics Paper 1: arithmetic||40 marks||110 marks|
|Mathematics Paper 2: reasoning||35 marks|
|Mathematics Paper 3: reasoning||35 marks|
The range of scaled scores available for each KS2 test is the same as 2016 and is intended to stay the same in future years. 80 is the lowest scaled score that can be awarded and 120 is the highest scaled score.
Pupils scoring at least a scaled score of 100 will have met the expected standard of the test.
A pupil awarded a scaled score of 99 or below has not met the expected standard in the test.
Pupils whose raw score is below the minimum needed to be awarded a scaled score on the test have not demonstrated sufficient understanding of the KS2 curriculum in the subject. Where this is the case the scaled score field for the pupil in the ‘Pupil results’ section of NCA tools will be ‘N’. The outcome of the test for the pupil will be ‘NS’: expected standard not achieved.
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