Background/Context: Reading achievement declined drastically during the COVID-19 pandemic (Bailey et al., 2021). One report suggests more than one-third of fourth-grade students cannot read at a basic level and access to effective literacy instruction is particularly limited for minority students and students with learning disabilities (Ellis et…

In experimental studies, researchers are often interested in secondary research questions that explore important aspects of main findings, such as whether or not program effects vary according to the level of fidelity in which the program has been implemented; or according to the dosage received by individuals participated in the program. In this…

In 2009, the United States Department of Education conducted a competition for a second round of Striving Readers grants. Its dual purpose was to: (1) Raise middle and high school students' literacy levels in Title I-eligible schools with significant numbers of students reading below grade level; and (2) Build a strong, scientific research base…

Most K-12 evaluations are designed to make inferences about how a program implemented at the classroom or school level affects student learning outcomes and such inferences inherently involve hierarchical data structure. One methodological challenge for evaluators is linking program implementation factors typically measured at the classroom or…

According to the National Assessment of Educational Progress, nearly 4 in 10 fourth graders read below the basic level. These literacy problems get worse as students advance through school and are exposed to progressively more complex concepts and courses. The purpose of this study was to assess the effectiveness of four remedial reading programs…