This document provides a systems thinking approach to developing a working definition of student food poverty. It defines student food poverty as dysfunctions (e.g. financial, skills, insecurity) within the system of student food provision. This system aims to keep students fit and healthy and involves shops, supermarkets, fast food outlets, and delivery services. The purpose is to improve educational outcomes by involving students, parents, caterers, and shopkeepers in processes like buying, preparing, and cooking food within boundaries of campus, halls, student housing, and home. This working definition considers student food poverty in a complex systems context rather than isolated factors.