achievement age

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.

achievement age

noun

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

Word History and Origins

Origin of achievement age¹

First recorded in 1920–25