Assessing Performance: Designing, Scoring, and Validating Performance TasksA comprehensive resource for assessment practitioners, this book provides step by step guidance for developing, administering, scoring, and validating a range of performance tasks, including literacy and other types of proficiency assessments. The authors explore how to establish the purpose of the assessment and how to develop scoring tools, train raters, reduce rater bias, review scores and report results, and use item level and test level analyses