The Wide Range Achievement Test, currently in its fifth edition (WRAT5), is an achievement test which measures an individual's ability to read words, comprehend sentences, spell, and compute solutions to math problems.[1]
The test is appropriate for individuals aged 5 years through adult. The WRAT5 provides two equivalent forms (Blue and Green), which enables retesting within short periods of time without potential practice effects that occur from repeating the same items. The alternate forms also may be administered together in a single examination.[1]
The test was developed in 1941 by psychologists Sidney W. Bijou and Joseph Jastak.[2] The test series was first published in 1946 and has historically been used in a variety of settings as a measure of the basic academic skills necessary for effective learning, communication, and thinking.
An overall composite score for reading was added with the 4th edition (WRAT4) in 2006; the WRAT5 update in 2017 included refinements to the Math Computation and Sentence Comprehension subtests, while maintaining the same overall structure of the assessment.