Daniel Muijs emphasizes the importance of being evidence-informed in education for moral and social justice reasons. He highlights the abundance and diversity of evidence available on effective teaching while cautioning that accessing and interpreting this evidence can be challenging, citing issues of complexity, cost, and potential bias. The document calls for the involvement of intermediaries to help educators navigate this landscape, while also stressing the need for systemic changes to ensure that research informs all aspects of teaching and professional development.