Differential item functioning (DIF) can undermine the validity of cross-lingual comparisons. While a lot of efficient statistics for detecting DIF are available, few general findings have been found to explain DIF results. The objective of the article was to study DIF sources by using a mixed method design. The design involves a quantitative phase…

Over approximately the first decade of the 21st century, Nebraska educators have experienced the development and implementation of two differing assessment systems. The STARS system, implemented in 2001, was the first standards-based assessment system that Nebraska had supported and required of schools in the state. In early 2008, the Nebraska…

The purpose of this explanatory mixed methods study was to explore the perceptions of Nebraska teachers about their experiences in the transition from STARS to NeSA. The study explored their perceptions of the influence of the transition on implementation of a balanced assessment system. As defined by NDE, a balanced system included NeSA testing,…