The incidence of writing disorder is as common as reading disorder, but it is frequently under-identified and rarely targeted for intervention. Increasing clinical understanding on various subtypes of writing disorder through assessment guided by data-driven decision making may alleviate this disparity for students with writing disorders. The purpose of this article is to provide the reader with insight into the clinical reasoning involved in the assessment and intervention planning for a child with a writing disorder. The reader will be guided through the authors' conceptualization of this case reflecting a recursive problem-solving approach to assessment "for" intervention.