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Sonya Powers

Sonya Powers is a Senior Research Associate in WestEd’s Assessment Research and Innovation team. She consults with states, organizations, and researchers to support them in developing valid and reliable measures. A trained quantitative methodologist and psychometrician, she has focused her research on issues of fairness in assessment, including special considerations for students who are English language learners and for learners with disabilities. Her methodological expertise includes classical test theory, generalizability theory, and item response theory.

Powers has numerous publications and presentations on practical psychometric issues in large-scale assessment. She also has extensive experience facilitating panel meetings with stakeholder groups, including educators and technical advisory committees. Prior to joining WestEd, she provided psychometric services at RTI International, ACT, and Pearson.

Powers received a PhD and MA in educational measurement and statistics from the University of Iowa, and a BA in psychology from the University of Arizona.