Making causal inferences from a quasi-experiment is difficult. Sensitivity analysis approaches to address hidden selection bias thus have gained popularity. This study serves as an introduction to a simple but practical form of sensitivity analysis using Monte Carlo simulation procedures. We examine estimated treatment effects for a school-based…

Scores on essay-based assessments that are part of standardized admissions tests are typically given relatively little weight in admissions decisions compared to the weight given to scores from multiple-choice assessments. Evidence is presented to suggest that more weight should be given to these assessments. The reliability of the writing scores…

The prevalence of homeschooling in the United States is increasing. Yet little is known about how commonly used predictors of postsecondary academic performance (SAT, high school grade point average [HSGPA]) perform for homeschooled students. Postsecondary performance at 140 colleges and universities was analyzed comparing a sample of traditional…

Speededness refers to the situation where the time limits on a standardized test do not allow substantial numbers of examinees to fully consider all test items. When tests are not intended to measure speed of responding, speededness introduces a severe threat to the validity of interpretations based on test scores. In this article, we describe…

This paper provides the basis for understanding score equating through item response theory (IRT). Theoretical justifications and practical advantages of IRT true-score test procedures are discussed. Three steps in the equating process are specified, and a self-test is included. (SLD)

Although stanine scores are used by many schools for posting students' test results in permanent records, not all teachers are confident in their interpretation of what stanine scores signify. This quiz and accompanying correct answers and explanations are offered to help make these scores more useful to practitioners. (LC)

Percentile scores appear to be the easiest standardized test scores for parents to understand. Yet in this true-false test, Hills reveals commonly held misconceptions about percentile score reports. (LC)

Normal Curve Equivalents (NCEs), a new score system for standardized tests, are used by school districts in reporting results to federal funding agencies. The author uses a quiz format to answer questions on the use of NCE scores. (EGS)

This article presents a model that can be used by local school districts for reanalyzing standardized test results to obtain a more valid assessment of local learning objectives can be used to identify strengths/weaknesses of existing programs as well as individual students. (EGS)

Four publishers responding to the previous discussion agreed that American elementary achievement has improved, but evidence presented by the Secretary of Education confirms that few real improvements have occurred since "Nation at Risk." Commercial achievement tests provide falsely high scores (the Lake Wobegon Effect). (SLD)

The increased use of test scores as a measure of school quality is discussed. Legitimate and illegitimate practices of test preparation are considered. Some commercial test preparation programs are reviewed, with some conclusions about their effectiveness and desirability. (SLD)

The author describes the evolution of the Scholastic Aptitude Test (SAT). He describes some of the contributions to educational research made by inquiries based on the SAT and gives particular attention to the way scaling and equating procedures for the SAT have evolved over the last half century. (Author/JAZ)

Effects of standardized testing on teaching and learning were studied in a survey of 341 elementary school teachers in 9 states, focusing on the meaning of test scores and test-score gains. Results indicate that standardized testing has considerable effects, and that teachers feel considerable pressure to improve student scores. (SLD)

Guidelines for appropriate test preparation practices are presented to ensure that tests used in high-stakes situations generate scores that represent their domains validly. These guidelines do not rely directly on two evaluative standards proposed by W. J. Popham (1991), although they share the concern for appropriate test preparation. (SLD)

Reviewing evidence from high school completion and dropout rates, college attendance, test scores, and international comparisons leads to the conclusion that U.S. schools do a pretty good job of teaching students who are ready to learn. Given what schools have to contend with, their performance is indeed impressive. (SLD)