This paper presents a teaching and research experience in which Post-Occupancy Evaluation (POE) is used as a drawing method to inform adaptive design in public buildings. Conducted in a ten-week MSc2 Architecture seminar with 24 students, the course employed Research by Design (RbD) to loop between evaluation and intervention. Students combined on-site surveys, questionnaires and behavioural mapping, translating findings into living drawings that register use, comfort and change over time. Layered plans, annotated axonometrics and narrative diagrams turned evidence into spatial guidelines. The approach reframes evaluation from a retrospective assessment into an active driver of design decisions aimed at well-being and environmental performance. The paper outlines the course process, key outcomes across campus buildings, and reflects on the pedagogical value of representation as inquiry.