Wechsler Individual Achievement Test - Second Edition (WIAT-II)

WIAT II assesses an individual's performance in areas of reading, math, written language, and oral language to guage academic achievement. Academic achievement is defined as the ability to apply cognitive skills and learned knowledge to grade-level expectations.


Reading Comprehension, Language Comprehension, Decoding, Cipher Knowledge
1st Grade,
2nd Grade,
3rd Grade

Administration Information

PreK-K: 45 minutes; Grades 1-6: 90 minutes; Grades 7-16: 1.5 - 2 hours

$604.00 for complete kit

Training CD available
Not indicated

Access and Use



Open Access
Peer-Reviewed Study Citations

Mayes, S. D., & Calhoun, S. L. (2008). WISC-IV and WIAT-II Profiles in Children with High-Functioning Autism. Journal of Autism and Developmental Disorders, 38(3), 428–439. https://link.springer.com/article/10.1007/s10803-007-0410-4?shared-arti…

Antshel, K., Hier, B., Fremont, W., Faraone, S. V., & Kates, W. (2014). Predicting Reading Comprehension Academic Achievement in Late Adolescents with Velo-Cardio-Facial (22q11.2 Deletion) Syndrome (VCFS): A Longitudinal Study. Journal of Intellectual Disability Research, 58(10), 926–939. https://eric.ed.gov/?q=Predicting+Reading+Comprehension+Academic+Achiev…

Konold, T. R., & Canivez, G. L. (2010). Differential Relationships between WISC-IV and WIAT-II Scales: An Evaluation of Potentially Moderating Child Demographics. Educational and Psychological Measurement, 70(4), 613–627. https://eric.ed.gov/?q=Differential+Relationships+between+WISC-IV+and+W…

Parkin, J. R., & Beaujean, A. A. (2012). The Effects of Wechsler Intelligence Scale for Children-Fourth Edition Cognitive Abilities on Math Achievement. Journal of School Psychology, 50(1), 113–128. https://eric.ed.gov/?q=The+Effects+of+Wechsler+Intelligence+Scale+for+C…

Glutting, J. J., Watkins, M. W., Konold, T. R., & McDermott, P. A. (2006). Distinctions without a Difference: The Utility of Observed versus Latent Factors from the WISC-IV in Estimating Reading and Math Achievement on the WIAT-II. Journal of Special Education, 40(2), 103–114. https://eric.ed.gov/?q=Distinctions+without+a+Difference%3a+The+Utility…

McNair DJ, Curry TL. The Forgotten: Formal Assessment of the Adult Writer. Journal of Postsecondary Education and Disability. 2013;26(1):5-19. http://search.ebscohost.com.revproxy.brown.edu/login.aspx?direct=true&d…. Accessed June 21, 2020.

Marlow, R., Norwich, B., Ukoumunne, O. C., Hansford, L., Sharkey, S., & Ford, T. (2014). A Comparison of Teacher Assessment (APP) with Standardised Tests in Primary Literacy and Numeracy (WIAT-II). Assessment in Education: Principles, Policy & Practice, 21(4), 412–426. https://eric.ed.gov/?q=A+Comparison+of+Teacher+Assessment+(APP)+with+St…
Gonzalez, J. E. (2008). Test Review: The Psychological Corporation. (2003). “The Early Reading Diagnostic Assessment” (2nd ed.). San Antonio, TX: Psychological Corporation, Harcourt Assessment Company. Journal of Psychoeducational Assessment, 26(3), 299–303. https://eric.ed.gov/?q=Test+Review%3a+The+Psychological+Corporation.+(2…).+“The+Early+Reading+Diagnostic+Assessment”+(2nd+ed.&id=EJ804959

Johnson, S., Marlow, N., & Wolke, D. (2012). Assessing Educational Outcomes in Middle Childhood: Validation of the Teacher Academic Attainment Scale. Developmental Medicine & Child Neurology, 54(6), 544–551. https://eric.ed.gov/?q=Assessing+Educational+Outcomes+in+Middle+Childho…

Costa, L.-J. C., Edwards, C. N., & Hooper, S. R. (2016). Writing Disabilities and Reading Disabilities in Elementary School Students. Learning Disability Quarterly, 39(1), 17–30. https://eric.ed.gov/?q=Writing+Disabilities+and+Reading+Disabilities+in…

Ness, M., Couperus, J., & Willey, M. (2013). A Comparison Study of the Effectiveness of the Lexia Reading Programme. Kairaranga, 14(1), 16–24. https://eric.ed.gov/?q=A+Comparison+Study+of+the+Effectiveness+of+the+L…

Jackson, E., Whitehead, J., & Wigford, A. (2010). In an EBD Population Do Looked after Children Have Specific Needs Relating to Resilience, Self-Perception and Attainment? Educational Psychology in Practice, 26(1), 69–77. https://eric.ed.gov/?q=+In+an+EBD+Population+Do+Looked+after+Children+H…

Doty, S. J., Hixson, M. D., Decker, D. M., Reynolds, J. L., & Drevon, D. D. (2015). Reliability and Validity of Advanced Phonics Measures. Journal of Psychoeducational Assessment, 33(6), 503–521. https://eric.ed.gov/?q=Reliability+and+Validity+of+Advanced+Phonics+Mea…


Manual scoring
Psychometric Citations

Doty, S. J., Hixson, M. D., Decker, D. M., Reynolds, J. L., & Drevon, D. D. (2015). Reliability and Validity of Advanced Phonics Measures. Journal of Psychoeducational Assessment, 33(6), 503–521. https://doi.org/10.1177/0734282914567870

Canivez, G. L., Watkins, M. W., James, T., Good, R., & James, K. (2014, September 4). Incremental validity of WISC–IVUK factor index scores with a referred Irish sample: Predicting performance on the WIAT–IIUK. Retrieved June 1, 2020, from https://onlinelibrary.wiley.com/doi/abs/10.1111/bjep.12056

Michalko, K. T., & Saklofske, D. H. (1996). A Psychometric Investigation of the Wechsler Individual Achievement Test with a Sample of Saskatchewan Schoolchildren. Canadian Journal of School Psychology, 12(1), 44–54. https://doi.org/10.1177/082957359601200107

Cohen, L. G. (1993). Test Review: Wechsler Individual Achievement Test. Diagnostique, 18(3), 255–268. https://doi.org/10.1177/153450849301800306

Validity. (n.d.). Retrieved June 13, 2020, from https://www.pearsonclinical.co.uk/Psychology/ChildCognitionNeuropsychol…