Research has shown that boys display higher levels of childhood conduct problems than girls, and Black children display higher levels than White children, but few studies have tested for scalar equivalence of conduct problems across gender and race. The authors conducted a 2-parameter item response theory (IRT) model to examine item…

This study is relevant to parents, private organizations, and the educational system interested in discovering whether charter school students perform better academically than traditional public elementary school students. The Pennsylvania System of School Assessment data were used to analyze and compare student performance in grades 3-5 from two…