Building Assessment Systems That Work
Measurement expertise helping states, districts, and assessment providers develop better supports, systems, and tools.
WestEd offers measurement expertise that directly helps states, districts, and assessment providers answer the questions that matter most—whether programs are working, for whom, and why. With this in mind, we help develop new or improved measurement ecosystems and codesign improved solutions for teaching, learning, and system design.
The best assessments support thriving learners and empowered communities, guide educators to make defensible instructional decisions, and show leaders where to focus. At WestEd we work with client partners to improve educational experiences for students and the communities that support them. We bring together psychometricians, content experts, and data literacy specialists who have supported assessment programs nationwide over the past 10 years, spanning early childhood through postsecondary.
Our shared commitment: informing innovations in measurement that lead to better outcomes for everyone.
Our Capacities
We build assessments from the ground up, and we fix ones that aren’t working. This includes formative assessment processes, classroom assessment tools, summative state tests, kindergarten readiness measures, and credentialing and adult learning instruments. Every instrument we build or improve is designed to produce evidence that students, families, educators, and policymakers can use to inform decisions.
Featured Service
Early Childhood Assessment Services
WestEd develops reliable, developmentally appropriate early childhood assessments—including kindergarten readiness assessments used at scale—in four states. We also support K–3 universal screening systems, including research on screener score validity and cross-screener comparability.
Featured Service
Assessment Content Development
We develop content for state agencies, districts, and vendors across ELA, math, science, social studies, and civics assessments. Recent work includes development and validation of a math placement assessment for Palo Alto Unified School District.
We conduct validity and fairness studies, apply modern psychometric methods, and provide the technical backbone for programs where the results matter and the methodology will be scrutinized. That includes equating, standard setting, alignment, classification accuracy, linking, score reporting, and computational psychometrics.
Featured Service
Psychometric Assessment Services
We serve as independent psychometric partners to state agencies, districts, and assessment vendors. Clients engage us for single studies or multiyear embedded support for operational programs, including independent validity research for Amplify’s mCLASS Math and mCLASS Literacy systems, among others.
Featured Project
NAEP Assessment Framework Update
We contributed to the Mathematics, Reading, and Science framework updates for the National Assessment of Educational Progress (NAEP), helping to ensure that the nation’s benchmark assessments reflect current expectations for what students should know and be able to do. The NAEP science framework was the first NAEP framework to incorporate the three dimensions of science that are prevalent in most states’ science standards.
High-quality assessment data is valuable only when the people using it can turn it into meaningful decisions about programs, policies, and instruction. We help educators and leaders choose the right tools, interpret the results with confidence, and turn assessment evidence into practical next steps they can apply right away to their practice.
Featured Service
Assessment Literacy Workshops
Our workshops help educators and administrators evaluate and develop assessment tools and strategies for different purposes and use results to improve student learning. We tailor content to the audience, whether that is a roomful of building principals learning to interpret screener data or a state assessment team developing a strategy to support coherent local assessment practices across the state.
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Formative Assessment Professional Learning
WestEd’s Student Agency in Learning (SAIL) is an in-depth, hybrid course that provides comprehensive professional learning in formative assessment for teachers. Our Formative Assessment Inter-Rater Reliability (FAIR) course builds leadership capacity to observe and coach teachers on key dimensions of formative assessment practice.
States, districts, and assessment providers face challenging decisions with assessment systems: Which screeners should they adopt? Should they adopt new interim assessments? How should they balance accountability requirements with local assessment needs? How can they best integrate AI?
We help education agencies and organizations think through these questions with technical expertise and independent perspective to build systems where the pieces fit together.
Featured Project
Center for Standards, Assessment, and Accountability (CSAA)
CSAA provides tools, research, and direct technical assistance to help states and districts strengthen their standards, assessment, and accountability systems. CSAA works across jurisdictions to address policy and technical challenges, ensuring that these systems support meaningful learning for all students. See how policies are shifting, compare your state’s approach, and find ideas to guide your next planning conversation or policy decision.
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Assessment System Design and Evaluation
We work with states, districts, and assessment providers to evaluate and improve assessment programs end-to-end. We also help clients model the impact of assessment redesign decisions before implementation and consult with states to modernize their assessment systems. Our work supports leaders to ensure their assessment systems are coherent, efficient, and effective for supporting learning.
Our team develops machine learning models for screener comparability, applies machine learning to study whether assessments measure the same thing for students across overlapping demographic groups, builds AI tools for item and passage development, fine-tunes AI models for assessment alignment, and studies how large language models may introduce bias into measurement.
Featured Project
Training Generative AI to Reflect Learners in Your State
WestEd is studying how generative AI can support the creation of assessment content that is engaging and relevant assessment. Early findings suggest that models enriched with student context can produce higher quality passage sets.
Featured Project
Evaluating Bias in AI-Powered Assessment
We developed a rubric for detecting structural bias in LLM-generated text, finding that default model outputs consistently reproduced deficit narratives across 2,400 generated responses. The work provides a framework for identifying where AI helps assessment and where it creates new concerns.

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