Exploring the practical wisdom and internal mechanisms of quality assurance in after-school sports services constitutes a crucial foundation for achieving their sustainable and high-quality development. This study adopts a multi-source textual analysis approach, systematically collecting and analysing publicly available policy documents, evaluation reports, case studies, and professional commentaries related to British after-school sports services from 2010 to 2023. Using content analysis and thematic analysis methods, the research identifies and refines the core experiences of quality assurance from the perspectives of government, schools, sports organisations, and evaluation institutions. The study finds that the quality assurance system for after-school sports services in Britain is built upon four interconnected pillars: a stable policy framework and dedicated funding mechanism, a school-led multi-stakeholder collaborative implementation model, a professional capacity-building system for personnel, and a data-driven monitoring and evaluation mechanism. These elements operate within a cyclical "policy-planning-implementation-evaluation-improvement" process, forming a dynamic quality assurance ecosystem. Key experiences include: policy specificity and funding transparency providing foundational guarantees; strategic school leadership and deep community partnerships forming the operational core; systematic professional development ensuring service quality; and evidence-based evaluation driving continuous improvement. This research constructs an analytical framework that clarifies the interactive relationships among the key elements of quality assurance, namely "Policy Input → Strategic Planning → Collaborative Delivery → Professional Support → Outcome Evaluation → Policy Optimisation." The findings provide a systematic experience reference and actionable pathways for China to enhance the quality management of after-school sports services under the "Double Reduction" policy.

Yanjiu Ge, Xiangtong Liu, Xiaoya Han. A Study on the Fundamental Experience of After-School Sports Services in British Primary and Secondary Schools —Based on Multi-source Textual Data and Content Analysis. Frontiers in Sport Research (2026), Vol. 8, Issue 2: 54-59. https://doi.org/10.25236/FSR.2026.080209.

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