Inquiry training is a powerful teaching model for principals to know and teachers to implement. It is designed to teach students to engage in causal reasoning and to become more fluent and precise in asking questions. Further, inquiry training helps learners build concepts and form and test hypotheses in all curriculum areas. The current emphasis on test performance and accountability makes inquiry training a necessary model for teaching higher level skills. For the sake of all students, principals must work diligently to provide a school environment where teachers receive the appropriate staff development and the encouragement to use inquiry training and other research-based models, where decisions are driven by research, and where pride and success in the meaningful learning of all students prevail. This article uses a sample lesson to illustrate a five-step process of inquiry training.