This study uses PISA cycle 3 field trial data to investigate the relationships between gender differential item functioning (DIF) across countries and test languages for science items and their formats and the four other dimensions defined in PISA framework: focus, context, competency, and scientific knowledge. The data used were collected from 60…

This study examined the extent to which the underlying factor structure of the 2005 South Carolina Palmetto Achievement Challenge Tests (PACT) in science for grades 3, 4, and 5 was equivalent for students who were administered the test in a regular (standard) or accommodated form. Three accommodation groups were of interest: students who received…

Educational progress has been moving in the right direction for several years in Alabama. Now, with the implementation of Alabama's own Plan 2020, an even higher level of accountability for students, teachers, administrators, support systems, and schools/school systems, Alabama is poised to experience unprecedented growth. Add to that, the Alabama…

The Washington State University Honors College course, UH 290, "Science as a Way of Knowing," engages freshmen in scientific inquiry and scholarly literature research. The UH 290 instructor, a learning design consultant, and two librarians collaborated to develop and deliver the course's information literacy curriculum. The team used…

The Maine Department of Education wanted to use longitudinal data from its data system to better understand whether and how student and school characteristics are associated with student performance on the state-mandated Maine High School Assessment (MHSA). It was particularly interested in understanding the factors associated with changes in test…

This paper reports on the development of a tool that generates randomised, non-multiple choice assessment within the BlackBoard Learning Management System interface. An accepted weakness of multiple-choice assessment is that it cannot elicit learning outcomes from upper levels of Biggs' SOLO taxonomy. However, written assessment items require…

In 2008-09, four alternate assessments were available for use in grades/courses where the state typically tests students. As in earlier years, results for WCPSS students were mixed. Student performance on the NCCLAS, an assessment designed mainly for limited English proficient (LEP) students, improved in mathematics but remained low in reading for…

The North Carolina Department of Public Instruction revised the alternate assessment system for students with disabilities (SWD) and/or limited English proficiency (LEP) in 2009-10. On the three alternate assessments that were given in 2009-10, results for WCPSS students were mixed. On the NCEXTEND1 assessments, which are taken by students with…

Using data from the Programme for International Student Assessment (PISA) and the Trends in International Mathematics and Science Study (TIMSS), we investigate the link between test scores (mathematics and science) and cross-country income differences. We would like to know whether test scores are good indicators of labor-force quality. The…

This paper describes the structure and impact of an NSF-funded ITEST project designed to enrich science, technology, engineering, and mathematics (STEM) education using educational modules that teach students to construct, program, and test a series of sensors used to monitor water quality. During the two years of the SENSE IT project, over 30…

Purpose: The purpose of this study was to determine the effectiveness of competitive Student Team Achievement Division (STAD), non-competitive STAD, and traditional learning on chemistry learning and learning perceptions. Sample, design and methods: By adopting the STAD approach, this study examined 144 nursing students at a five-year junior…

Education policy in the U.S. in the last two decades has emphasized large-scale assessment of students, with growing consequences for schools, teachers, and students. Given the high stakes of such tests, it is important to understand the relationships between students' answers to test items and their knowledge and skills in the tested content…

In assessment, the ability to construct test items that measure a targeted skill is fundamental to validity and alignment. The ability to do the reverse is also important: determining what skill an existing test item measures. This paper presents a model for classifying test items that builds on procedures developed by others, including Bloom…

Mutational inactivation of a specific gene is the most powerful technique to analyze the biological function of the gene. This approach has been used for a long time in viruses, bacteria, yeast, and fruit fly, but looked quite hopeless in more complex organisms. Targeted inactivation of specific genes (also known as knock-out mutation) in mice is…

When the federal government passed the No Child Left Behind (NCLB) legislation into law, its main objective was to improve the education in America's schools so that all students will be learning at the proficient level by the year 2014. However, not all students may be able to achieve at the same levels in some science classes, especially…