Previous research illustrated that reading comprehension and science performance correlate highly. Because students with specific learning disorders with impairments in reading (SLD-IR) show deficits in reading comprehension, they may struggle to perform in science. As language in science is characterized by linguistic complexity, the question…

Background: In many classrooms, science textbooks remain a significant tool, functioning in some instances as the de facto curriculum and influencing pedagogical practices. Such conventions are more noticeable in the science classrooms of developing countries, like Jamaica, because of a chronic shortage of specialist science teachers and the…

We expect that word knowledge accumulates gradually. This article draws on earlier approaches to assessing depth, but focuses on one dimension: richness of semantic knowledge. We present results from a study in which three distinct item types were developed at three levels of depth: knowledge of common usage patterns, knowledge of broad topical…

The purpose of the present study is to examine the language characteristics of a few states' large-scale assessments of mathematics and science and investigate whether the language demands of the items are associated with the degree of differential item functioning (DIF) for English language learner (ELL) students. A total of 542 items from 11…

The impact of language characteristics in mathematics test items on student performance was evaluated for students with disabilities (SWD) and English language learners (ELL) as well as a large general student sample. Relationships were examined for test items and students at 4th, 7th, and 10th grades. The individual test item was the unit of…