The Center on Enhancing Early Learning Outcomes (CEELO) and the Center on School Turnaround (CST) collaborated to develop case studies of three selected schools receiving SIG funds that have, with the support of their districts, promoted the use of early childhood programming (PK-3) as a key strategy in their schools' turnaround models. The goal of this document is to increase the awareness and understanding of how to effectively embed PK-3 strategies in school turnaround efforts within the SIG program. Thus, we sought schools where specific practices in the PK-3 years aligned with and accelerated promising turnaround efforts through the implementation of the SIG models. Through a review of data on all elementary schools that received SIG funds to implement interventions beginning in school year (SY) 2010-11 (referred to as "Cohort 1 schools" as they were the first group of schools to receive SIG funds under the new requirements), three sample schools were selected for this report. The schools--Orchard Gardens K-8 School in Boston, Massachusetts; Horace Mann Elementary School in St. Louis, Missouri; and Elliott Elementary School in Lincoln, Nebraska--were selected based on growth in their preschool populations and improved student achievement data. The practices implemented by these three elementary schools were examined through research literature and school data reviews, combined with interviews with school, district, and state leaders from both early learning and school improvement offices. (author abstract)