achievement age

American  

noun

Psychology.

1. the level of educational development of an individual as determined by an achievement test and based on a comparison of the examinee's score with the average score of individuals of the same chronological age.

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achievement age British  

noun

1. psychol the age at which a child should be able to perform a standardized test successfully Compare mental age

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Etymology

Origin of achievement age

First recorded in 1920–25

Example Sentences

Instead, the measure is likely comparing that student to others in his “norm group”—students with like characteristics such as level of achievement, age, and so forth.

From Forbes