The purpose of this research was to develop observed score and true score equating procedures to be used in conjunction with the multidimensional item response theory (MIRT) framework. Three equating procedures--two observed score procedures and one true score procedure--were created and described in detail. One observed score procedure was…

CognitiveGenesis collected achievement and ability test data from 2006-2009 for all students in Seventh-day Adventist schools in North America. Students were above average in achievement compared to national norms and achieved above that predicted by their ability scores. The more years students attended Adventist schools, the higher they…

Above-level testing is the practice of administering aptitude or academic achievement tests that are designed for typical students in higher grades or older age-groups to gifted or high-achieving students. Although widely accepted in gifted education, above-level testing has not been subject to careful psychometric scrutiny. In this study, I…

This study was conducted in order to evaluate available linking techniques for forming large item pools and to make recommendations as to which techniques should be used under various circumstances. Variables of interest included calibration model and procedure, sample size, overlap level, and linking procedure. The calibration models considered…

Two traditional equating schemes and seven item response theory equating schemes were compared. Data used came from the 1978 equating project of the Iowa Tests of Educational Development. The study entailed both the equating of forms of similar difficulty and the equating of levels of differing difficulty. (Arthor/RL)

This paper profiles the student subgroup achievement and gap trends in Iowa for 2010. In grade 8 (the only grade in which subgroup trends were analyzed by achievement level), Iowa had data for racial/ethnic subgroups, low income students, and boys and girls at the proficient and advanced levels. Trends at the proficient and advanced levels were…

Presents the procedures, results, and conclusions of a research study designed to determine the relationship between selected student characteristics and science achievement. Subjects were 126 seniors in the public high schools of Rochester, Minnesota. Student variables include sex, science preparation, grades in science, and intelligence.…

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…

Through the nineteen-forties, fifties, and up to the mid-sixties, achievement test scores steadily increased. Since then, many test scores drop. The reported test score declines are more dramatic in recent years and most evident for higher grades. They are specially pronounced in verbal tests, but hold for nearly all tested areas. Specially:…

The purpose of this study was to compare the relative robustness of the one-, two-, and modified two-parameter latent trait logistic models for the Iowa Tests of Educational Development. Results suggest that the modified two-parameter model may provide the best representation of the data. (Author/BW)

A study was conducted to compare the quality of the item parameter estimates obtained from the ANCILLES and LOGIST estimation procedures using goodness of fit as a criterion. Statistics used to compare the fit included a chi-square statistic and a mean square deviation statistic. Other analyses performed included comparisons of the distributions…

Average performance on subtests of the Iowa Tests of Educational Development was compared for 177 high school students taking the test under silent reading (standardized) conditions and time limits and students listening to audiotapes of test material as they read the test. Poor readers were helped by the tapes. (SLD)

As part of its academic testing program and the evaluation of academic achievement, the Des Moines (Iowa) Public School System administers two standardized, norm-referenced achievement tests. These are the Iowa Tests of Basic Skills (ITBS) and the Iowa Tests of Educational Development (ITED). This document provides information regarding…

The stability of reading performance, as measured by the Metropolitan Achievement Tests, Iowa Tests of Basic Skills, and Iowa Tests of Educational Development, was studied using students in grades 1 through 7 and grades 9 and 11. A reading vocabulary test and a reading comprehension test are included in all three test batteries. The standard…

In an effort to identify factors contributing to the poor achievement levels of American Indian students, a sample of juniors and seniors from the Albuquerque Indian School (AIS is a Bureau of Indian Affairs boarding school) were administered the following tests: Test of English as a Foreign Language (TOEFL); Iowa Test of Educational Development…