The Psychometric Toolbox (PT) is a user-friendly, non-commercial package mainly intended to be used for instructional purposes in introductory courses of educational and psychological measurement, psychometrics and statistics. The PT package is organized in six separate modules or sub-programs: Data preprocessor (descriptive analyses and data…

When measurement is taught without a context, students may struggle to make sense of the numbers and units involved. To master measurement, elementary school students need opportunities to discuss how they measured and applied their developing skills and reasoning in context. Measurement is an essential life skill, required to do everything from…

Defining and measuring success are not merely process steps, but critical conversations that shape how education is understood and delivered. They influence how individuals within and outside the system perceive the goals of education. They shape the incentives for stakeholders seeking to improve educational outcomes. Methods of measuring success…

This year's Action Guide examines the need for new ways of measuring student success. Academic test scores are just one method of measuring student progress, offering an incomplete picture of student learning and growth. Educators and state leaders recognize that serving all students well requires focusing on their individual needs, including…

The proper use of psychological tests requires that the measurement instruments have adequate psychometric properties, such as reliability and validity, and that the professionals who use the instruments have the necessary expertise. In this article, we present the first review of tests published in Spain, carried out with an assessment model…

Using "error bars" on graphs is a good way to help students see that, within the inherent uncertainty of the measurements due to the instruments used for measurement, the data points do, in fact, lie along the line that represents the linear relationship. In this article, the author explains why connecting the dots on graphs of collected data is…

This collection of 3 papers summarizes the current thinking of those involved in the Head Start Program Effects Measurement Project regarding selected issues in the assessment of Head Start program effects on children's development. The first paper describes the project panelists' current approaches to the selection of measurement dimensions.…

This article discusses the theoretical underpinnings of different types of income poverty measures--absolute, relative, and a National Academy of Sciences (NAS) "quasi-relative" one--and empirically assesses them by tracking their performance over time and across demographic groups. Part of the assessment involves comparing these measures to…

Described are important changes that will be introduced in the mathematics sections of the new Scholastic Aptitude Test (SAT). The three main changes are (1) permission to use calculators; (2) inclusion of open-ended questions; and (3) content revisions consistent with the National Council of Teachers of Mathematics "Curriculum and Evaluation…

Classifies errors as either systematic or blunder and uncertainties as either systematic or random. Discusses use of error/uncertainty analysis in direct/indirect measurement, describing the process of planning experiments to ensure lowest possible uncertainty. Also considers appropriate level of error analysis for high school physics students'…

Presented is a summary of the actions taken by American College Testing in response to calls for reform in standardized testing. The areas of reform discussed are test development, test content, skills levels, test criteria, and new testing initiatives, such as alternative-response-format questions and calculator use. (MDH)