Pearson product-moment correlation coefficient between item g and test score X, known as item-test or item-total correlation ("Rit"), and item-rest correlation ("Rir") are two of the most used classical estimators for item discrimination power (IDP). Both "Rit" and "Rir" underestimate IDP caused by the…

Many test developers try to ensure the content validity of their tests by having external experts review the items, e.g. in terms of relevance, difficulty, or clarity. Although this approach is widely accepted, a closer look reveals several pitfalls need to be avoided if experts' advice is to be truly helpful. The purpose of this paper is to…

The Nebraska Student-Centered Assessment System (NSCAS) is a statewide assessment system that embodies Nebraska's holistic view of students and helps them prepare for success in postsecondary education, career, and civic life. It uses multiple measures throughout the year to provide educators and decision-makers at all levels with the insights…

Developmental score scales represent the performance of students along a continuum, where as students learn more they move higher along that continuum. Unidimensional item response theory (UIRT) vertical scaling has become a commonly used method to create developmental score scales. Research has shown that UIRT vertical scaling methods can be…

In the arena of educational testing, accessibility refers to the degree to which students are given the opportunity to participate in and engage a test. Accessibility theory is a model for examining the interactions between the test-taker and the test itself and defining how they may decrease some students' access to the test event, ultimately…

Educational achievement is a very important issue for parents, teachers, and the government. An accurate measurement plays a very important role in evaluating achievement fairly, and, therefore, analysis methods have been developed considerably in recent years. Education based on long-time learning processes forms a fruitful base for item tests,…

Educators have a need for a procedure to generate alternate forms of tests. The reliability of alternate forms generated from a table of specifications is examined, using 78 high school remedial mathematics students as subjects. (Editor)

A comparison of double as opposed to single multiple-choice questions yielded significant differences in regard to item difficulty, item discrimination, and internal reliability, but not concurrent validity. (Author/PN)

Using estimates of item ease and item discrimination, procedures are provided for computing estimates of the reliability and percentage of failing scores for tests assembled from these items. Two assumptions are made: that the average item coefficient will be approximately equal to the average of the estimated coefficients and that the score…

Educators are called upon to improve the quality of classroom tests to enhance the learning of content. Less faculty concern for tests than for other features of instruction, compounded by a lack of knowing how to assess different levels of learning with test questions that measure complex processes, appear to generate poor quality classroom…

This guide is organized into five chapters; (1) an approach to testing--decisions made from test results, types of achievement tests, types and levels of objectives, and test validity, reliability, and practicality; (2) classroom test construction--planning, item banks, item writing, assembly, administration, and scoring; (3) test analysis-item…

This article addresses the capacity of high stakes tests to measure the most significant kinds of learning. It begins by examining a set of philosophical arguments pertaining to construct validity and alleged conceptual obstacles to attributing specific knowledge and skills to learners. The arguments invoke philosophical doctrines of holism and…

This publication offers guidelines, practical suggestions, and examples for developing better teacher-made tests. It is divided into five chapters: (1) Planning Classroom Tests, (2) Guidelines for Developing Classroom Tests, (3) Assembling and Administering Classroom Tests, (4) Assessing Test Items, and (5) Desirable Characteristics of Tests.…

The broad topic of preparing examinations for college-level courses is addressed in this guide. General suggestions include the following: devise a test that reinforces the objectives established for the course; decide upon the primary purpose of the test before constructing it; make the test as valid and reliable as possible; and standardize the…

Perspectives on testing and grading are considered; and strategies, reference materials, and sample test items are presented. Attention is directed to specific impacts of testing and grading on students and teachers, purposes of testing and grading, and common complaints of students and teachers. Extra activities proposed for the teacher include…