Chicago has been in the forefront of the country in its use of 9th-grade indicators of dropout. Catalyzed by the development of the freshman on-track indicator and research around it, Chicago school administrators, central office personnel, and external partners have developed a number of mechanisms using 9th-grade indicators to stimulate school…

The purpose of this article is to describe and demonstrate a three-step process of using differential distractor functioning (DDF) in a post hoc analysis to understand sources of differential item functioning (DIF) in multiple-choice testing. The process is demonstrated on two multiple-choice tests that used complex alternatives (e.g., "No…

Elementary school students often misinterpret the equal sign (=) as an operational rather than a relational symbol. Such misunderstanding is problematic because solving equations with missing numbers may be important for the development of higher order mathematics skills, including solving word problems. Research indicates equal-sign instruction…

In a previous article, we (Naglieri & Ford, 2003) provided evidence from a large-scale study that similar proportions of White, Black, and Hispanic children would be identified as gifted using the Naglieri Nonverbal Ability Test (NNAT; Naglieri, 1997). Lohman (2005) has taken issue with our conclusions and our methods. We provide several…

The predictive validity of the California Achievement Test, Reading (CAT-R) was examined for 480 Hispanic and Anglo pupils in Grades 2 and 3. The validity of the CAT-R as a predictor for reading for combined groups of Hispanic and Anglo pupils appeared to be limited. (Author/LMO)

Examined the incidence of differential item functioning (DIF) on 3 subtests of the Iowa Tests of Basic Skills using test scores for 2,867 Alaskan students, characterized as "Native" or White at fourth and sixth grades or sixth and eighth grades. Effect size differences favoring whites were larger when students of equal English…

The average grade equivalent reading comprehension scores of students in Black schools are compared to those of students in White schools under two forms of test administration. Concludes that use of grade level testing with the Iowa Tests of Basic Skills is biased in favor of low scoring subgroups. (Author)