This study investigates the relationships among factor correlations, inter-item correlations, and the reliability estimates of subscores, providing a guideline with respect to psychometric properties of useful subscores. In addition, it compares subscore estimation methods with respect to reliability and distinctness. The subscore estimation…

To promote and support teachers' professional growth in using formative assessment practices in the classroom, we developed and piloted a suite of materials which consists of a set of rubrics for ten dimensions of formative assessment and six self-reflection/peer-observation tools. We describe the iterative development process, the design…

Scientific argumentation is one of the core practices for teachers to implement in science classrooms. We developed a computer-based formative assessment to support students' construction and revision of scientific arguments. The assessment is built upon automated scoring of students' arguments and provides feedback to students and teachers.…

The State of Washington requires school districts to file court petitions on students with excessive unexcused absences. The "Washington Assessment of Risks and Needs of Students" (WARNS), a self-report screening instrument developed for use by high school and juvenile court personnel in such situations, purports to measure six facets of…

This manuscript describes the comprehensive validation work undertaken to develop the Recognizing Effective Special Education Teachers (RESET) observation system, which was designed to provide evaluations of special education teachers' ability to effectively implement evidence-based practices and to provide specific, actionable feedback to…

We describe the conceptualization, design, development, validation, and testing of a summative instrument that measures high school students' ability to analyze and evaluate data, construct scientific explanations, and formulate scientific arguments in biology and chemistry disciplinary contexts. Data from 1,405 students were analyzed to evaluate…

In most U.S. schools, teachers are evaluated using observation of teaching practice (OTP). This study investigates rater effects on OTP ratings among 421 principals in an authentic teacher evaluation system. Many-facet Rasch analysis (MFR) using a block of shared ratings revealed that principals generally (a) differentiated between more and less…

Test-takers' interpretations of validity as related to test constructs and test use have been widely debated in large-scale language assessment. This study contributes further evidence to this debate by examining 59 test-takers' perspectives in writing large-scale English language tests. Participants wrote about their test-taking experiences in…