The Supporting Effective Teaching project commenced in the early 1990s with studies of how classroom teachers work with students with special educational needs included in their elementary classrooms. Over the ensuing 20 years, the project team prepared and tested a model of the factors that influence student outcomes in inclusive classrooms, with…

This article presents the development and the technical and conceptual characteristics of two of the three measures used in the SET project, to discuss how they relate to each other, and to present evidence of their concurrent validity. The Pathognomonic-Interventionist (P-I) Interview yields rich descriptions of teachers' experiences with one or…