Poor program implementation constitutes one explanation for null results in trials of educational interventions. For this reason, researchers often collect data about implementation fidelity when conducting such trials. In this article, we document whether and how researchers report and measure program fidelity in recent cluster-randomized trials.…

There are a growing number of large-scale educational randomized controlled trials (RCTs). Considering their expense, it is important to reflect on the effectiveness of this approach. We assessed the magnitude and precision of effects found in those large-scale RCTs commissioned by the UK-based Education Endowment Foundation and the U.S.-based…

Poor program implementation constitutes one explanation for null results in trials of educational interventions. For this reason, researchers often collect data about implementation fidelity when conducting such trials. In this article, we document whether and how researchers report and measure program fidelity in recent cluster-randomized trials.…

Background: The Education Endowment Foundation (EEF) is an independent charity that was established in 2011 with the explicit aim of breaking the link between family income and educational achievement in England. Over the seven years since its inception, EEF has contributed to the existing evidence base by funding over one hundred randomised…

Butterfly Phonics aims to improve the reading of struggling pupils through phonics instruction and a formal teaching style where pupils sit at desks in rows facing the teacher. It is based on a course book created by Irina Tyk, and was delivered in this evaluation by Real Action, a charity based in London. Real Action staff recruited and trained…

Challenge the Gap (CtG) is a school collaboration programme designed by Challenge Partners that aims to break the link between disadvantage and attainment. The main components of CtG are: (1) after-school workshops drawing on published research and evidenced practice; (2) focused in-school interventions with a selected cohort of disadvantaged…

"Teach For America" ("TFA") is a highly selective route to teacher certification that aims to place non-traditionally trained teachers in high-need public schools. The What Works Clearinghouse (WWC) identified seven studies of teachers trained through "TFA" that both fall within the scope of the Teacher Training,…

"Talk of the Town" is a community led approach to supporting the speech, language and communication (SLC) skills of children and young people, aged 0-19, living in areas of social disadvantage. It is delivered by the Communication Trust. This evaluation reports on a randomised controlled trial undertaken with 2696 pupils in 64 primary…

As evidence-based reform becomes increasingly important in educational policy, it is becoming essential to understand how research design might contribute to reported effect sizes in experiments evaluating educational programs. The purpose of this study was to examine how methodological features such as types of publication, sample sizes, and…

The Summer Active Reading Programme aimed to improve reading skills and particularly comprehension by raising children's engagement in, and enjoyment of, reading at the transition from primary school to secondary school. The programme was delivered by Booktrust, an independent charity that aims to change lives through engaging people with reading.…