The purpose of this study is to contribute to efforts to improve methods for gathering and analyzing data from classroom observations in early literacy. The methodological approach addresses current problems of reliability and validity of classroom observations by taking into account differences in teachers' uses of instructional actions (e.g.,…

Although research on the effectiveness of differentiated and enriched instruction in improving the achievement of diverse students is still emerging, some studies suggest that students in academically diverse classrooms benefited academically from differentiated learning experiences. The primary research question explored in this study was…

The purpose of this article is to describe and demonstrate a three-step process of using differential distractor functioning (DDF) in a post hoc analysis to understand sources of differential item functioning (DIF) in multiple-choice testing. The process is demonstrated on two multiple-choice tests that used complex alternatives (e.g., "No…

Results are presented, in the form of an annual report, of the standardized test performance of elementary and secondary school students in the Montgomery County Public Schools (MCPS), Rockville, Maryland. This year, as in the past, the report includes an update of the historical record of countywide test results on the Iowa Tests of Basic Skills…

This two-year study explored the academic lives of three boys in a combined fifth-sixth grade classroom. As these case studies illustrate, viewing students' academic worlds from multiple perspectives can lead to more accurate, comprehensive evaluations and efficacious adaptations of students' learning environments. Richard Snow's aptitude theory…

The performance of three equating methods--the presmoothed equipercentile method, the item response theory (IRT) true score method, and the IRT observed score method--were examined based on three equating criteria: the same distributions property, the first-order equity property, and the second-order equity property. The magnitude of the…

The first step of the data analysis with respect to the eventual application of the various new methods in latent trait theory is here initiated. The data are a set of approximately 500 item responses of each of 7,439 examinees to the Iowa Tests of Basic Skills, Form 6, on one of three difficulty levels, which correspond to the ages of 11, 12 and…

One of the consequences of Ohio's educational accountability efforts mandated under Ohio Senate Bill 55 (SB 55) and the traditional testing programs of Ohio school districts is the generation of huge amounts of data. In order for school-based educators to organize and explore these voluminous amounts of information, they need exposure to…

Response to intervention (RTI) has emerged as a promising, but possibly vulnerable, alternative to the current model of identification and eligibility assessment in special education. Nested within a simple and compelling structure for RTI are many questions and challenges that make its future as "policy" at-risk unless these issues can…

A study was conducted to: (1) determine the simple and multiple correlation coefficients between selected educational/personal variables and academic achievement at intermediate grade levels as measured by the Iowa Tests of Basic Skills; (2) determine the multiple linear regression equations for predicting individual student achievement as…

This paper highlights measurement issues faced when attempting to assess and interpret results of a school improvement project. Based on the assumption that to measure effectiveness, one must measure a wide variety of school factors, the paper presents a broad perspective on measurement problems and dilemmas in analyzing norm-referenced test data…

Academic achievement under a four-day school week is compared to the traditional five-day school week. Test scores from the CAT [California Achievement Test], ITBS [Iowa Test of Basic Skills], TASK [Stanford Test of Academic Skills], SAT [Stanford Achievement Test], TAP [Tests of Academic Proficiency], and MAT [Metropolitan Achievement Test] were…