The Wechsler Individual Achievement Test, Third Edition (WIAT-III) is an individually administered test for assessing the achievement of individuals between the ages of 4-50. The WIAT-III covers a range of academic skills including reading, writing, mathematics, and oral language.
The WIAT-III is often used to assess a student’s strengths and weaknesses, inform decisions regarding eligibility for educational services, as well as assess for specific learning disabilities. It can also be particularly useful for schools when they are required to complete an Individual Learning Plan for a student. The WIAT-III is commonly used in conjunction with a cognitive assessment.