State Quality Rating Improvement Systems (QRIS) can effectively support the improvement of school-age childcare programs by leveraging Program Quality Assessments (PQAs) alongside structured improvement planning and professional development. Real-world implementations in Arkansas, Michigan, and Pennsylvania underscore the impact and adaptability of the PQA within QRIS, emphasizing its role in fostering a culture of improvement and the importance of investing in well-trained staff to ensure positive outcomes for school-age children.