Ellen Mandinach, EDC Center for Children
Ashley Lewis, EDC Center for Children
Abstract: This presentation will describe an evaluation that experimentally examines the impact of the "Big Math for Little Kids" pre-K curriculum in contrast to a control group within 16 New York City childcare centers. The presentation describes the intervention and measurement issues, as well as the challenges and opportunities of conducting a randomized field trial in this dynamic and ever changing educational environment. We will discuss fidelity of implementation, including information about both treatment and the control interventions, as well as the use of Early Childhood Longitudinal Study items and other measurement techniques. Issues that either facilitate or impede the smooth implementation of the interventions that may affect the internal validity of the study will be explored. Finally, we conclude with lessons learned as we move into our final year of data collection that focuses on student performance at the kindergarten level.