Wechsler Individual Achievement Test WIAT-III Testing FAQ’s

How long does the test take?

It varies by grade level and the number of sub-tests administered, but generally about 60-90 minutes.

How is the test administered?

It can be paper and pencil or an online administration.

What age does my child need to be to take the test?

It begins as early as 4 and goes up to age 85.

What is the WIAT?

It is a standardized achievement test used to measure previously learned knowledge in the areas of Reading, Written Language, Mathematics, and Oral Language. It is used in a variety of educational, clinical, and research settings.

Why is the WIAT given–what advantages does it have?

One of the major advantages of using a WIAT is that it can be used in combination with the WISC test to derive predicted scores in achievement areas, based on an individual’s IQ. If the predicted score is much higher than the actual score in an achievement area, there is often a problem associated with these skills. Psychologists are then able to identify specific learning disabilities or difficulties in a certain area.

How is the WIAT scored?

There are grade-based standard scores, age-based standard scores, percentile ranks, stanines, NCEs, age, and grade equivalents.

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