Wechsler Individual Achievement Test Fourth Edition: US Version

WIAT-4 Achievement Test: Updated Academic Assessment for All Ages

The WIAT-4 achievement test (Wechsler Individual Achievement Test, Fourth Edition – US Version) is a comprehensive tool for assessing academic skills. It covers listening, speaking, reading, writing, and maths in children, adolescents, and adults.

WIAT-4 builds on the trusted format of earlier editions. It now features new subtests, flexible scoring, and links to the WISC-V and KABC-2 NU for a complete learning profile.

New in WIAT-4

• New Subtests for more detailed insights

• Expanded Scoring Options for better reporting

• Dyslexia Index Scores for quick and reliable screening

• Automated Essay Scoring to save time

Subtests Added

• Phonemic Proficiency – Tests how quickly and accurately students manipulate sounds

• Orthographic Fluency – Measures speed of irregular word reading

• Decoding Fluency – Tests pseudoword reading speed

• Sentence Writing Fluency – Assesses sentence writing speed

• Orthographic Choice – Evaluates spelling recognition

New composite scores now cover Phonological Processing, Orthographic Processing, and Writing Fluency, with an Extended Orthographic Processing Composite for deeper insight.

The WIAT-4 achievement test is a flexible and efficient tool for identifying learning needs and planning targeted support.

Explore our full range of trusted assessments to support every stage of development – click here to discover more.