The overarching purpose of the High-Quality Prekindergarten Grant case study project was to explore how 10 grant recipients used the grant funds to enhance their prekindergarten programs. The case studies examined district and school staff perceptions of the grant and how the grantees used the funds to enhance the school readiness of eligible children, developed or refined family engagement plans, and increased the accessibility and types of professional development available to prekindergarten teachers. The case study project employed a qualitative research methodology and was designed to answer the following questions: 1. How are the case study sites using grant funds to support the delivery of high-quality prekindergarten? 2. What priorities do the case study sites have for implementing a high-quality prekindergarten program? 3. How have the grantees used progress monitoring results to improve instruction and engage families as educational partners? 4. What family engagement strategies are being implemented as a result of the High-Quality Prekindergarten Grant? 5. According to the case study sites, what aspects of delivering high-quality prekindergarten will be unsustainable without continuation of House Bill 4 funding? 6. How are the case study sites using grant funding to increase prekindergarten teacher training or qualifications? In addition, the case study protocols were designed to capture any emerging topics or themes identified by the participants as essential elements of implementing a high-quality prekindergarten program. (author abstract)