This study explored the effectiveness of extended time (ET) accommodations in the 2017 NAEP Grade 8 Mathematics assessment to enhance educational equity. Analyzing NAEP process data through an XGBoost model, we examined if early interactions with assessment items could predict students' likelihood of requiring ET by identifying those who received…

This study analyzed performance, process, and survey data of eighth graders with learning disabilities (LDs) who took the 2017 National Assessment of Educational Progress (NAEP) digital math test. Compared with students with LDs who did not receive extended time accommodations (ETAs), students with LDs who received and used ETA scored…

This report presents results from a new quantitative synthesis of research on the effectiveness and validity of test accommodations for English language learners (ELLs) taking large-scale assessments. In 2006, the Center on Instruction published a review of the literature on test accommodations for ELLs titled "Practical Guidelines for the…

There has been little data collected on how much testing actually goes on in America's schools and how the results are used. So in the Spring of 2014, the Council staff developed and launched a survey of assessment practices. This report presents the findings from that survey and subsequent Council analysis and review of the data. It also offers…

The validity of current standardized competency tests for writing is in doubt as is the need for such testing at all. Some tests, especially those requiring little writing, may not be testing what they purport to test (content validity). Instructional validity (testing what has actually been taught) raises the issue that what is being tested is…

Different forms of accommodation have been suggested in the assessment of English language learners (ELL). This study examined the effectiveness of a few accommodation strategies on the performance of ELL students in mathematics. A group of 946 eighth graders participated in this study. Using mathematics test items from the National Assessment of…

The impact of testing accommodation on the performance of students with limited English proficiency (LEP) was studied, focusing on the possibility of differential impact of accommodation strategies on subgroups formed based on students' background characteristics and the validity of assessments using accommodated versus nonaccommodated…