Karabatsos compared the power of 36 person-fit statistics using receiver operating characteristics curves and found the "H[superscript T]" statistic to be the most powerful in identifying aberrant examinees. He found three statistics, "C", "MCI", and "U3", to be the next most powerful. These four statistics,…

Cognitive ability tests are widely used in organizations around the world because they have high predictive validity in selection contexts. Although these tests typically measure several subdomains, testing is usually carried out for a single subdomain at a time. This can be ineffective when the subdomains assessed are highly correlated. This…

This article provides examples of how serious misconceptions can result when only "all student" scores from the National Assessment of Educational Progress (NAEP) are used for simplistic state-to-state comparisons. Suggestions for better treatment are presented. The article also compares Kentucky's eighth grade EXPLORE testing to NAEP…

This article investigates several questions regarding the impact of different item formats on measurement characteristics. Constructed response (CR) items and multiple choice (MC) items obviously differ in their formats and in the resources needed to score them. As such, they have been the subject of considerable discussion regarding the impact of…

In high-stakes writing assessments, rater training in the use of a rating scale does not eliminate variability in grade attribution. This realisation has been accompanied by research that explores possible sources of rater variability, such as rater background or rating scale type. However, there has been little consideration thus far of…

Humphry (this issue) has written a thought-provoking piece on the interpretation of item discrimination parameters as scale units in item response theory. One of the key features of his work is the description of an item response theory (IRT) model that he calls the logistic measurement function that combines aspects of two traditions in IRT that…

Many students who are deaf or hard-of-hearing are eligible for a signing accommodation for state and other standardized tests. The signing accommodation, however, presents several challenges for testing programs that attempt to administer tests under standardized conditions. One potential solution for many of these challenges is the use of…

As the largest international study ever taken in history, the Trend in Mathematics and Science Study (TIMSS) has been held as a benchmark to measure U.S. student performance in the global context. In-depth analyses of the TIMSS project are conducted in this study to examine key issues of the comparative investigation: (1) item flaws in mathematics…

Statewide exit examinations play an important role in discussions on school effectiveness. Referring to educational governance concepts, this paper presumes a relation between varying organizational structures of statewide examinations across states, and heterogeneous effects on school actors. It is assumed that their ability to affect work in…

The Center for Research on Education Outcomes (CREDO) at Stanford University conducted a large-scale analysis of the impact of charter schools on student performance. The center's data covered 65-70% of the nation's charter schools. Although results varied by state, 17% of the charter school students have significantly higher math results than …

The Comparing Options in Secondary Mathematics: Investigating Curriculum (COSMIC) project is a longitudinal study of student learning from two types of mathematics curricula: integrated and subject-specific. Previous large-scale research studies such as the National Assessment of Educational Progress (NAEP) indicate that numerous variables are…

"How New York City's Charter Schools Affect Achievement" estimates the effects on student achievement of attending a New York City charter school rather than a traditional public school and investigates the characteristics of charter schools associated with the most positive effects on achievement. Because the report relies on an…

This study examines the appropriateness of a large-scale state standards-based English-Language Arts (ELA) assessment for students who are deaf or hard of hearing by comparing the internal test structures for these students to students without disabilities. The Grade 4 and 8 ELA assessments were analyzed via a series of parcel-level exploratory…

Mounting pressure in the policy arena to improve teacher productivity either by improving signals that predict teacher performance or through creating incentive contracts based on performance--has spurred two related questions: Are there important determinants of teacher productivity that are not captured by teacher credentials but that can be…

This paper examines possible explanations for the fact that evaluation results are rarely used. Most explanatory factors for use of results in decision making mentioned in the literature have been clustered in three categories of variables. They concern: (1) the making of decisions about the practical problem; (2) the way in which evaluation is…