The main confirmatory research question guiding the design of the impact evaluation is: "What is the impact of Success for All (SFA) on elementary school students' reading achievement, compared to students in non-SFA schools?" An answer to this question will determine the assessment of whether SFA is successful at turning around low-performing schools. In addition to the main confirmatory question, this evaluation will address exploratory questions such as subgroup impacts and impact on non-cognitive outcomes. These analyses are intended to deepen the understanding of the overall average impact of SFA. The implementation study has three principal goals: to measure the fidelity with which the program model is put in place (and to determine whether the identity of the SFA coach affects fidelity), to assess the treatment-control contrast in educational experience, and to document the implementation process and lessons for scale-up and replication.