Linguistic accuracy (LA) has been shown to be indicative of second language (L2) essay quality through the use of various measurements, such as error counts and error-free T-units. However, concerns persist regarding the precise definition of LA, as findings in recent literature often depend on the specific measures of LA employed. This study…

In this study we investigated the internal factor structure of a large-scale K--12 assessment of English language proficiency (ELP) using samples of fourth- and eighth-grade English learners (ELs) in one state. While U.S. schools are mandated to measure students' ELP in four language domains (listening, reading, speaking, and writing), some ELP…

The first aim of this study was to develop a computer adaptive EFL test (CALT) that assesses test takers' listening and reading proficiency in English with dichotomous items and polytomous testlets. We reported in detail on the development of the CALT, including item banking, determination of suitable item response theory (IRT) models for item…