Available now for pre-order!

Provides a quick, reliable, well-standardized measure of articulation and phonology to help clinicians identify individuals in need of speech sound services.

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Available now for pre-order!

Now Available!

While maintaining the strengths of the original test, the CASL-2 offers new enhancements to optimize validity, functionality, and ease of use. 

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Now Available!

Now Available !

The OPUS™ evaluates listening comprehension and displays a person’s ability to integrate and apply many of the skills measured by the CASL-2.

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Now Available !

Clinical Workshop Spaces Available

Register today for our May ADOS-2 Clinical Workshop in Washington, D.C.

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Clinical Workshop Spaces Available

ABAS-3 Now Available!

Retaining all features that made the ABAS-II the preferred instrument for evaluating adaptive behavior, the ABAS-3 is now even easier to administer and score.

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ABAS-3 Now Available!

Research Participation >

Join us in our effort to standardize new tests and revisions, and you may be eligible for free WPS test materials or monetary payment.

Graduate School Alliance Program (GSAP) >

If you are a university-based instructor or trainer, WPS offers a selection of complimentary products for use in scholarly courses and training.

Training & Workshops >

Gain valuable experience and learn how to use and interpret select WPS tests.

  • ADOS-2 Clinical Workshop
  • SI Certification Program
  • Third Party Training