This paper provides a history of ETS's role in developing assessment instruments and psychometric procedures for measuring change in large-scale national assessments funded by the Longitudinal Studies branch of the National Center for Education Statistics. It documents the innovations developed during more than 30 years of working with…

Federal legislation such as "No Child Left Behind" mandated that students with disabilities be included in accountability standards, creating an important responsibility to fairly assess all students, even those with disabilities. Consequently, a sense of urgency was placed on the entire educational system to ensure that these students…

The widespread application of personal computers to educational and psychological testing has substantially increased the number of test administration methodologies available to testing programs. Many of these mediums are referred to by their acronyms, such as CAT, CBT, CCT, and LOFT. The similarities between the acronyms and the methods…

The equating process links scores from different editions of the same test. For testing programs that build nearly parallel forms to the same explicit content and statistical specifications and administer forms under the same conditions, the linkings between the forms are expected to be equatings. Score equity assessment (SEA) provides a useful…

U.S. state educational testing programs administer tests to track student progress and hold schools accountable for educational outcomes. Methods from item response theory, especially Rasch models, are usually used to equate different forms of a test. The most popular method for estimating Rasch models yields inconsistent estimates and relies on…

Psychometricians continue to introduce new approaches to setting cut scores for educational assessments in an attempt to improve on current methods. In this paper we describe the Item-Descriptor (ID) Matching method, a method based on IRT item mapping. In ID Matching, test content area experts match items (i.e., their judgments about the knowledge…

This document describes the breadth of the research that the ETS (Educational Testing Service) Research & Development division is conducting in 2010. This portfolio will be updated in early 2011 to reflect changes to existing projects and new projects that were added after this document was completed. The research described in this portfolio falls…

This document describes the breadth of the research being conducted in 2008 by the Research and Development Division at Educational Testing Service (ETS). The research described falls into three large categories: (1) Research supported by the ETS research allocation; (2) Research funded by testing programs at ETS; and (3) Research funded by…

The author, as a testing consultant, has considered and answered 16 questions on the various aspects of testing usually asked by school staff members. The questions and answers are primarily concerned with statistical aspects of achievement tests and the best way to interpret test results to clients, parents and teachers. The need for caution in…

"Test Scoring" provides insight into psychometric procedures as used by a professional testing company or in large-scale projects. The book contains an overview of standard test theory, a discussion of factor analytic theory, and an exploration of special applications and problems. (SLD)

A critical review of the psychometric properties of the System of Multicultural Pluralistic Assessment (SOMPA) model for student assessment is presented. The review criticizes the lack of validity of some of the measures but praises the goals of the system. (JKS)

This survey investigated: (1) the extent that psychometric criteria are used in test selection; (2) the weight given to different types of psychometric information relative to other qualities of the test; and (3) possible reasons for differences among districts. Directors of testing offices, including members of the National Association of Test…

Computer-based testing (CBT) is typically implemented using one of three general test delivery models: (1) multiple fixed testing (MFT); (2) computer-adaptive testing (CAT); or (3) multistage testing (MSTs). This article reviews some of the real cost drivers associated with CBT implementation--focusing on item production costs, the costs…

Two focus groups of test and measurement experts were held to explore the use of out-of-level testing for students with disabilities. The participants (n=17) included state and federal level assessment personnel, test company employees, and university professors. A content analysis of the narrative results indicated that there was no clear…

In this study, special education teachers identified students with learning disabilities who were working on math skills usually taught two grades below the grade in which the student was enrolled. Each student (n=33) took two levels of the MAT/7 math computation test, an on-grade test, and an out-of-level test intended for students two grades…