The author provides information about reliability and areas that educators should examine in determining if an assessment is consistent and trustworthy for use, and how it should be interpreted in making decisions about students. Reliability areas that are discussed in the column include internal consistency, test-retest or stability, inter-scorer…

Universal screening is one of the most-common topics and well-accepted best practices within the field of gifted and talented education. There appears to be little disagreement that universally screening all students as part of a gifted and talented identification process results in fewer missed students. But surprisingly, there is little guidance…

Psychometrics is the field of designing tests and assessments to measure certain psychological concepts. It is chiefly concerned with two fundamental properties: reliability and validity. These properties are often influenced by confounding variables: other things that can influence performance but are not what you are trying to measure. Here, I…

Assessments are one of the most important--and often misunderstood--elements of education. In most cases, tests are administered by the state as well as by districts and schools. Assessments at each of these levels have distinct purposes, yield different information, and are part of a powerful, coordinated approach to improving student outcomes.…

School- and college-based vocational and technical qualifications (VTQs) in England are required to award successful candidates a grade rather than simple pass or fail. Ensuring the reliability and validity of these grades is considered vital, particularly in light of the high-stakes purposes for which school assessment results in England are…

The BCBA Task List (5th and 6th Edition) requires behavior analysts are familiar with multiple assessment methods, including tools to assess the function of problem behaviors and assess skill strengths and deficits. Although several studies exist on the assessment of functions using indirect functional assessments, descriptive functional…

Validity, reliability, and fairness are three prominent indicators for evaluating the quality of assessment processes. Each of the indicators is most often written about and applied in the context of large-scale assessment. As a result, the technical properties of these indicators make them limited in both their practicality and relevance for…

This chapter characterises the two key purposes of assessment, formative and summative, within a general model of assessment of student learning. It discusses reliability and validity issues in relation to the two purposes and considers formative and summative purposes as related and can be brought together in developing a dependable approach to…

One of the areas subsumed under the data-based decision making and accountability practice identified in the National Association of School Psychologists' (NASP) "Model for Integrated School Psychological Services" is to collect information on psychological and educational variables to make decisions at a number of levels of service…

The development of proficiency in the practices used by scientists and engineers is considered an important student outcome of laboratory instruction. We developed tasks to assess students' use and development of selected scientific and engineering practices in the general chemistry laboratory using an adapted evidence-centered design approach. In…

Was the approach proposed for calculating exam grades in summer 2020 fair? Were the grades eventually awarded (after policy changes) fair? What is a fair arrangement for 2021? These questions have been at the heart of debate in the UK in the light of COVID-19. After schools were closed in the spring of 2020 and the decision was made not to proceed…

Reliability is a measure of consistency. It is the degree to which student results are the same when they take the same test on different occasions, when different scorers score the same item or task, and when different but equivalent tests are taken at the same time or at different times. Reliability is about making sure that different test forms…

The Every Student Succeeds Act (ESSA) aims to ensure that all students are college- and career-ready by requiring all schools to implement high-quality accountability systems and services for students. The ESSA impacts assessment practices in schools by requiring staff to account for a broader range of variables related to student well-being,…

Reading scores exist for a continuum of purposes, from informal assessment to formal standardized tests. This brief aims to answer the question: What matters most for elementary-grade teachers when thinking about reading scores, and what could policymakers do to help teachers? Three positions worth pursuing in this regard are shared: (1) every…

This Study Snapshot highlights key findings from a larger study examining the validity and reliability of the Kansas Clinical Assessment Tool (K-CAT), a newly developed tool for assessing the performance of teacher candidates. The study team used interviews with cooperating teachers, content experts' ratings of the alignment of the K-CAT to…