While the Evidence-Based Education (EBE) movement has gained significant traction globally, its implementation remains highly uneven across Europe (European Commission, 2024). This research investigates how EBE principles are translated into practice within diverse national policy landscapes. Using initial scoping work from the United Kingdom as a baseline for a highly institutionalized "What Works" model (Edovald and Nevill, 2020), this study examines the barriers and approaches to EBE integration in three further jurisdictions: the Netherlands, Finland, and Switzerland. It employs a comparative case-study design framed by a multidimensional rubric of five EBE pillars: practice-based research, causal evidential standards, systematic synthesis, knowledge mobilization, and institutionalization. Data collection consisted of in-depth, semi-structured interviews with 15–20 key experts (4–5 per country) across the sectors of policy-making, academic research, and school leadership. This qualitative approach explores the systemic facilitators and inhibitors that dictate how rigorous evidence actually reaches the classroom. Preliminary analysis shows differences in how EBE is operationalized compared to the UK model. In the Netherlands, there is a strong emphasis on sophisticated knowledge mobilization and clearinghouse structures (Wubbels and van Tartwijk, 2017). In Finland, EBE appears less as a top-down mandate and more as an embedded feature of high-level initial teacher education, where a "teacher-as-researcher" culture may render rigid institutional bodies less necessary (Chung, 2023). In Switzerland, the decentralized, cantonal system creates unique challenges for the implementation of evidence-based interventions in a systematic way (OECD, 2022). The results suggest that EBE integration is non-linear. This can create friction points where the drive for high-fidelity RCT evidence often competes with the bottom-up necessity for teachers to adapt research (Hofmann, 2024). Furthermore, a lack of central coordination towards the production and implementation of EBE, a lack of capacity to run these studies, and difficulties in translating evidence for practitioners and policy makers remain significant hurdles (Gorard, See, and Siddiqui, 2020). By mapping these case studies back to the original EBE rubric, this work demonstrates that successful implementation requires an "ecosystem approach." Rather than a one-size-fits-all model of institutionalization, the results suggest that effective evidence use depends on balancing structural rigor with local professional agency (Hargreaves, 1997). This research provides a critical roadmap for policymakers to foster evidence-informed cultures that are both scientifically robust and contextually sensitive.

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