Previous research from the Council for Adult and Experiential Learning (CAEL) and the Western Interstate Commission for Higher Education (WICHE) found that prior learning assessment/credit for prior learning (PLA/CPL) 1 has a positive effect on adult student credential completion--an effect that was evident for every student subgroup analyzed in a…

This article illustrates the use of an explanatory item response modeling (EIRM) approach in the context of measuring group differences in science achievement. The distinction between item response models and EIRMs, recently elaborated by De Boeck and Wilson (2004), is presented within the statistical framework of generalized linear mixed models.…

Following the publication of the third edition Wechsler scales (i.e., WAIS-III and WMS-III), demographically corrected norms were made available in the form of a computerized scoring program (i.e., WAIS-III/WMS-III/WIAT-II Scoring Assistant). These norms correct for age, gender, ethnicity, and education. Since then, four new indexes have been…

This study examined the relationship between high-stakes testing pressure and student achievement across 25 states. Standardized portfolios were created for each study state. Each portfolio contained a range of documents that told the "story" of accountability implementation and impact in that state. Using the "law of comparative…

This technical report outlines the results of a correlational study of an Oral Reading Fluency (ORF) measure, a Reading Comprehension measure, a Vocabulary measure, and a statewide, large-scale reading assessment. The effects of school income level, gender, ethnicity, Special Education status, and English Language Learner status are also…