As a test developer in NFER's Centre for Assessment, I am proud of the tests we develop for schools. As a researcher working to improve the learning and the lives of pupils, my primary concern is that schools choose valid and reliable tests. So what makes a good test? In this article, I will attempt to explain what questions schools should ask when they are considering purchasing any new tests.
The validity of a test is important because teachers draw conclusions about a pupil's attainment or progress based on those test results (alongside other classroom evidence such as homework, etc).
You may think that it goes without saying that a mathematics test will measure mathematical ability but unfortunately not all tests have good validity.
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