"Scaling" is the process of constructing a score scale that associates numbers or other ordered indicators with the performance of examinees. Scaling typically is conducted to aid users in interpreting test results. This module describes different types of raw scores and scale scores, illustrates how to incorporate various sources of…

The steady growth of state testing programs and its implications for the measurement community are discussed in terms of testing purposes (monitoring, accountability, and curriculum advancement) and test development, administration, and reporting. It is important that the measurement community address crucial issues to maintain its substantial…

The scales of the National Assessment of Educational Progress (NAEP), as constructed, do not yield meaningful criterion-referenced interpretations. Poorly defined NAEP goals and the present knowledge base do not allow the measurement of what examinees can and cannot do. Inappropriate interpretations of NAEP data are discussed, with specific…

Uses data from the National Assessment of Educational Progress to demonstrate the frequent lack of fidelity between cognitively complex construct definitions and the simple cognitive assumptions embedded in common test-development practices. Describes alternative,construct-centered test development approaches for each stage of the test-development…

Compared four mapping item methods using data from the physical science test of the National Assessment of Educational Progress and studied the opinions of science content area experts about the difficulty of the items through a survey completed by 148 science teachers or scientists. Results of model-based mapping methods were more concordant with…