Q:

How do you interpret CogAT test scores?

A:

A person interprets CogAT scores by comparing the student's universal scaled scores for each test section with national average scores for all students. The person also reviews standard age scores, percentile ranks and stanine scores and then compares the student's relative strength and weaknesses between subjects.

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A students raw CogAT score converts to a universal scaled score. A student receives a separate universal scaled score for each battery she completes. The separate universal scaled scores then convert to a composite universal scaled score that reveals the student's overall performance.

To interpret a CogAT score, the person then compares the student's universal scaled score with the student's standard age scores. These age scores compare the student's performance with that of other students her age. The average standard age score is 100 and the maximum possible age score is 160. This standard age score tells the test reviewer if the student is above average, average or below average relative to other students her age by comparing the student's average age score with an average score and its standard deviation.

Similarly, the student's standard age score converts to a percentile rank. The test reviewer interprets the CogAT result by reviewing the student's percentile rank and determining the student's abilities relative to other students. An average percentile rank is 50.

The test reviewer also interprets CogAT results by reviewing the student's profile type. That is, the interpreter determines if the student has one area in which she performs well or particularly weak compared to other testing batteries. A student whose results are type A performs similarly across all testing batteries. A B profile type shows relative strength in one area. A student with a C profile demonstrates wide contrasts in ability between testing batteries and an E profile result indicates wide variances in subject-matter abilities.

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