Migration has been at the centre of policy debates across the OECD in recent years. This report identifies eight pillars of policy-making that the Strength through Diversity project has revealed to be crucial if education systems to effectively support newcomers. For each pillar, the report details a set of principles driving the design and implementation of system-level policies and school-level practices. The eight pillars ask policy-makers to: 1. consider the heterogeneity of immigrant populations; 2. develop approaches to promote the overall well-being of immigrants; 3. address the unique needs of refugee students; 4. ensure that motivation translates as a key asset for immigrant communities; 5. provide comprehensive language support; 6. organise resources to reduce the influence of socio-economic status on the outcomes of immigrants; 7. build the capacity of teachers to deal with diversity; 8. break down barriers to social cohesion while ensuring effective service delivery.