The purpose of this paper is to showcase new research that seeks to provide guidance on the heterogeneity of treatment effects by utilizing the variance of demographic differences in state assessments. This study is focused on a simple randomized block design where students are nested within schools, and within each school students are randomized…

Prior research has contributed to our understanding about the ways teachers communicate their expectations to students, how students perceive differential teacher behaviors, and their effect on students' own perceptions of ability and achievement. Despite more than half a century of this work, historically marginalized students continue to be…

In the Southwest, politicians, legislature, and voters have devised and instituted a plan originally known as House Bill 2732, voted into law A.R.S.15-701§ A (2) & (3), which declares that all third grade students, beginning in the 2013-2014 school year, must receive a score that demonstrates their competency as approaching or above their…

The economic status of families and their children's learning outcomes are closely related. For example, children living in poverty tend to score worse on measures of reading and math performance than their more affluent peers, and this achievement gap is present by kindergarten. In this study, we identified protective factors associated with…

This study was conducted to examine the relationships between student achievement, as measured by Arizona's Instrument to Measure Standards, and teacher-assigned grades within a large, urban Phoenix, Arizona school district. For the quantitative component of the study, a proportionate stratified random sample of 3rd grade students from schools…

The gap in achievement between students from different socioeconomic backgrounds continues to challenge educators. As schools with high poverty populations continue to struggle, many disadvantaged students are subsequently referred for special education services. Educators today are faced with the problem of disproportionality, an over…

Background: Cluster-randomized experiments that assign intact groups such as schools or school districts to treatment conditions are increasingly common in educational research. Such experiments are inherently multilevel designs whose sensitivity (statistical power and precision of estimates) depends on the variance decomposition across levels.…