This paper is concerned with statistical issues in differential item functioning (DIF). Four subsets of large scale performance assessment data from the Georgia Kindergarten Assessment Program-Revised (N=105,731; N=10,000; N=1,00; and N=100) were analyzed using three DIF detection methods for polytomous items to examine the congruence among the…

The purpose of this study was to describe elementary preservice teachers' difficulties with understanding algebraic generalizations that were set in an authentic context. Fifty-eight preservice teachers enrolled in an elementary mathematics methods course participated in the study. These students explored and practiced with authentic, hands-on…

This paper describes the processes that one school district, the Visalia Unified School District (California), went through in establishing a standards-based assessment and accountability system using multiple methods. First the district's standards-based assessment and accountability system and the methods used to establish it are described, and…