The Curricular Reasoning Model explains how teachers reason about the role of the four classroom elements: mathematics, curriculum, teacher, and students. Data collected from secondary mathematics student teachers gives insight into how the Curricular Reasoning Model and accompanying self -assessment survey assist them in making intentional decisions during planning. Novice and pre-service teachers benefit from reflecting on which curricular reasoning aspects they engage with and which ones they overlook during planning. The Curricular Reasoning Model also provides teachers with an organizing structure to prioritize their decisions during planning.