Under the guidance of the Director of Psychometrics and Quantitative Research, the Psychometrician is responsible for designing and conducting psychometric analyses of test performance; conducting psychometric analyses related to test construction, validity, reliability, equating, and scoring; preparing technical reports; developing, maintaining, and applying quality control procedures; providing quantitative guidance to professional research staff at CAL; and coordinating external quantitative resources on behalf of the organization. The Psychometrician will also provide quantitative guidance to other researchers at CAL and coordinate external quantitative resources on behalf of the organization.ESSENTIAL DUTIES:Design, and conduct psychometric analyses for the WIDA ACCESS programPlan, conduct, document and present psychometric and statistical analyses using classical test theory and the Rasch model with Winsteps and Facets software, including analyses related to item quality, rater performance, DIF, reliability and classification consistency, standard setting, equating, scoring, and reportingInvestigate and evaluate new approaches to conducting psychometric analyses in language testingEstablish and monitor quality control procedures related to quantitative analyses, from data cleaning to final technical reports, ensuring the reliability and integrity of resultsProvide guidance to professional researchers on proposal design and quantitative analytical approaches upon request and participate in writing quantitatively-oriented portions of proposals as neededSupport outreach and collaboration, including research, development and client development activities with external partners, academia, innovators in education and language, and the public as needed
