The Primary Math Assessment (PMA) tool is increasingly being used in multiple districts in a northwestern state. The PMA provides both screening and diagnostic information in six domains to assess mathematical proficiency in young students in their early educational years. A previous study using multidimensional Rasch analyses found support for the PMA’s six-dimensional theoretical framework, and that the PMA is a reliable mathematics assessment for early grades. This study extended the examination of a Rasch model, implementing exploratory and confirmatory factor analysis, Item Response Theory, and Differential Item Functioning analyses. In doing so, this study found an IRT 2-PL model to fit best with these data and provided ways to improve the accuracy of measuring mathematical proficiency in early grades.
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Siebert, Carl F. and Brendefur, Jonathan L.. (2018). "Examining Validity and Reliability of a Mathematics Assessment Tool for K-2 Students". Journal of Education and Development, 2(1), 31-44. http://dx.doi.org/10.20849/jed.v2i1.329