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Home > Research > FAQ > What is a scaled score, and what does it mean?

What is a scaled score, and what does it mean?

A scaled score is a conversion of a student's raw score on a test or a version of the test to a common scale that allows for a numerical comparison between students. Because most major testing programs use multiple versions of a test, the scale is used to control slight variations from one version of a test to the next. Scaled scores are particularly useful for comparing test scores over time, such as measuring semester-to-semester and year-to-year growth of individual students or groups of students in a content area. However, within the same test, different content areas are typically on different scales, so a scaled score of 24 in Mathematics may not mean the same as a scaled score of 24 in Reading.