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Download full textSusan Kowalski; Megan Kuhfeld; Scott Peters; Gustave Robinson; Karyn Lewis – NWEA, 2024
The purpose of this technical appendix is to share detailed results and more fully describe the sample and methods used to produce the research brief, "COVID's Impact on Science Achievement: Trends from 2019 through 2024. We investigated three main research questions in this brief: 1) How did science achievement in 2021 and 2024 compare to…
Descriptors: COVID-19, Pandemics, Science Achievement, Trend Analysis
Thacker, Arthur A.; Dickinson, Emily R.; Bynum, Bethany H.; Wen, Yao; Smith, Erin; Sinclair, Andrea L.; Deatz, Richard C.; Wise, Lauress L. – Partnership for Assessment of Readiness for College and Careers, 2015
The Partnership for Assessment of Readiness for College and Careers (PARCC) field tests during the spring of 2014 provided an opportunity to investigate the quality of the items, tasks, and associated stimuli. HumRRO conducted several research studies summarized in this report. Quality of test items is integral to the "Theory of Action"…
Descriptors: Achievement Tests, Test Items, Common Core State Standards, Difficulty Level
Direct linkMeyers, Jason L.; Murphy, Stephen; Goodman, Joshua; Turhan, Ahmet – Pearson, 2012
Operational testing programs employing item response theory (IRT) applications benefit from of the property of item parameter invariance whereby item parameter estimates obtained from one sample can be applied to other samples (when the underlying assumptions are satisfied). In theory, this feature allows for applications such as computer-adaptive…
Descriptors: Equated Scores, Test Items, Test Format, Item Response Theory
