Each country's education system is intricate and unique, underpinned with different policies and priorities. International Large Scale Assessments (ILSAs) provide valuable insights into how a country's education system is performing. These studies gather in-depth contextual information about systems, schools, teachers and students; and explore the relationships between background characteristics and achievement. This information can help countries make evidence-informed decisions on aspects of their own education policy and classroom practice that they might review and adapt to improve learning. This briefing provides an overview of England's performance in three of the most recent studies to report their findings, considers the experiences of other participating countries, and seeks to draw lessons for future education policy in England.