The validity of the Kappa coefficient of chance-corrected agreement has been questioned when the prevalence of specific rating scale categories is low and agreement between raters is high. The researchers proposed the Lambda Coefficient of Rater-Mediated Agreement as an alternative to Kappa to address these concerns. Lambda corrects for chance…

Teacher performance scores inform education leaders' management of teacher human resources. However, prior research has implied that different interpretations of performance criteria between teachers and their evaluators suppress teacher development. Although research has examined teacher perceptions of performance scores and compared teacher…

Classroom observations remain the predominant data source used in teacher evaluations, but little is known about how rater characteristics may affect teachers' scores. For special educators, whose instructional practice requires specialized knowledge and skills, school administrators (i.e., the raters) without experience in special education…

In this book the authors explain how to build, and over time improve, the elements of an observation system that equips all observers to identify and develop effective teaching. It is based on the collective knowledge of key partners in the Measures of Effective Teaching (MET) project--which carried out one of the largest-ever studies of classroom…

Teacher observations have become a national education phenomenon, mandated by federal policies and promoted by philanthropists. They are crucial components of teacher evaluation systems that often have high stakes for teachers and school systems, but have sparked little innovation. Recent calls to make teacher evaluations better, faster, and…

This policy analysis project focused on state-level education policy which lacks evaluator training as well as on requirements for research-based best practices. Due to federal mandates and funding as well as accountability to all stakeholders, states are adopting more rigorous evaluation systems. These high-stakes evaluation systems are putting…

As states, districts, and schools transition toward more rigorous educator evaluation systems, they are placing additional weight on judgments about educator practice. Since teacher and principal observation ratings inherently rely on evaluators' professional judgment, there is always a question of how much the ratings depend on the particular…

Across the nation, states and districts are in the process of building better teacher evaluation systems that not only identify highly effective teachers but also systematically provide data and feedback that can be used to improve teacher practice. The "Practical Guide to Designing Comprehensive Teacher Evaluation Systems" is a tool…

The most fundamental reason why teachers are evaluated is because public schools take public money, and the public has a right to expect high-quality teaching. But there are two more basic purposes: (1) to ensure teacher quality; and (2) to promote professional development. The challenge is merging these two purposes of teacher evaluation.…

This study reports on the development and usefulness of an assessment procedure for teachers' coaching competence. We examined the usefulness of the developed procedure with respect to making reliable judgments. Video portfolios were constructed by researchers, which consisted of deliberately planned video recordings of teachers' coaching…

Across the nation, states and districts are in the process of building better teacher evaluation systems that not only identify highly effective teachers but also systematically provide data and feedback that can be used to improve teacher practice. "A Practical Guide to Designing Comprehensive Teacher Evaluation Systems" is a tool…

In the summer of 2011, the Tennessee Department of Education contracted with the National Institute for Excellence in Teaching (NIET) to provide a four-day training for all evaluators across the state. NIET trained more than 5,000 evaluators intensively in the state model (districts using alternative instruments delivered their own training).…

Several extensions to the Angoff method of standard setting are described that can accommodate characteristics of performance-based assessment. A study involving 12 panelists supported the effectiveness of the new approach but suggested that panelists preferred an approach that was at least partially conjunctive. (SLD)

A performance-standard setting procedure termed judgmental policy capturing (JPC) and its application are described. A study involving 12 panelists demonstrated the feasibility of the JPC method for setting performance standards for classroom teachers seeking certification from the National Board for Professional Teaching Standards. (SLD)

Discusses the role and consistency of judges' interpretations of teacher performance as part of an evaluative scheme for complex performance, with reference to the ideological framework of professional standards. The tension between assessment decisions and the recognition that assessment involves interpretation is explored. (SLD)