This article presents a case study of a state-funded international school in the Netherlands undertaking program reform. During the school year examined by the case study, the school was in the process of promoting the inclusion of children with special needs into its mixed ability classes, and diversifying and improving teaching and learning methodologies for all students. The study demonstrates how decisions made and implemented by the school leader and administration established a climate of inclusion, which aided program reform efforts that were focused on teaching methodologies.