Decades of evidence demonstrates that high-quality, well-implemented early education can positively impact the learning trajectories of vulnerable, high-needs young children. Yet, the majority of publicly-funded programs nationwide struggle to implement to quality standards with fidelity and fail to significantly advance children's early…

Children enter kindergarten with variable levels of mathematics skill and knowledge gained from informal learning opportunities at home, preschool, and daycare. Many perform well once they receive formal mathematics instruction. However, if students do not develop an initial understanding of the most basic aspects of formal mathematics, they are…

In this paper, the authors describe a case of measuring implementation fidelity within an evaluation of Math Recovery (MR), a pullout tutoring program for low-achieving first-graders. They use this case to address two aspects of implementation fidelity studies: (1) their feasibility with respect to unscripted interventions, and (2) their…