How is the WIAT Test Scored?

WIAT test scoring (Wechsler Individual Achievement Test-Third Edition) is based on several derivations of status scores and growth scores.

They are as follows:

• Status Scores
• Standard Score
• Percentile Rank
• Normal Curve Equivalent
• Stanines
• Growth Scores
• Grade Equivalent
• Age Equivalent
• Growth Scale Values

For standard scores, each number given shows the level at which your child is performing.

Very superior scores are scores over 130.

Superior scores range from 120-129.

High Average scores range from 110-119.

Average scores range from 90-109.

Low scores range from 80-89.

Borderline scores range from 70-79.

Extremely Low scores are scores under 69.

The administrators then use these scores to interpret performance by noting and comparing the following, noting the pattern of strengths and weaknesses:

• Growth Scale Values
• Grade-Based and Age-Based Scores
• Composite Scores
• Score Differences
• Statistical Significance of Score Differences
• – Frequency of Score Differences
• – Qualitative Evaluation of Subtest Component Score Differences
  • Out-of-Level Item Set Performance

To get started with all of the WIAT testing material offered by Testing Mom, check out our 100 Free Questions.

Tell us about your experiences

4 Responses

Katia

Wechsler Individual Achievement Test- Third Edition (WIAT-III)
where is the IQ in composite scores

Total Reading SScore 81 10%
Basic Reading SScore 83 13%
Comprehension SScore 81 10%
Written Expression SScore 81 10%
Mathematics SScore 92 30%

TestingMom.com

Hi Katia,

For score interpretation on the WIAT I would recommend reaching out to the psychologist that administered the test.

All the best,

Mayra

Kristin

The qualitative ranges given in this article are incorrect.

TestingMom.com

Hi Kristin –

Thank you for your comment.

Would you please email us at help@testingmom.com with the information that is incorrect?

All the best,

Marcus

See if TestingMom.com supports your child’s test by your school district. If you don't see your child's school district listed, check with us! We have practice for other tests as well.