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The current wave of science education reforms emphasizes more equitable opportunities for students as they learn disciplinary core ideas and apply crosscutting concepts by engaging in the practices of scientists. Formative assessment—the assessment teachers and students conduct while learning is in progress—also needs to shift to support this vision. This book combines three-dimensional science learning, sociocultural theories of learning, and science for justice and equity to provide a comprehensive picture of formative assessment for today's K–12 science classroom. Using practical...

This book makes clear to researchers what item-bias methods can (and cannot) do, how they work and how they should be interpreted. Advice is provided on the most useful methods for particular test situations. The authors explain the logic of each method - from item-response theory to nonparametric, categorical methods - in terms of how differential item functioning (DIF) is defined by the method and how well the method can be expected to work. A summary of findings on the behaviour of indices in empirical studies is included. The book concludes with a set of principles for deciding when DIF...