Dylan Wiliam, formative assessment researcher and teacher-trainer; Kate Jones, former classroom teacher and classroom-practice author; Sheila Heen, negotiation expert on receiving feedback; John Hattie, Visible Learning researcher; Shirley Clarke, formative assessment practitioner. They debate actionable feedback, on-the-move verbal feedback, feedback as system-wide practice, AI’s role and pitfalls, peer feedback and how to build classroom conditions that make feedback usable.