Probing is a communication skill that provides the psychological safety teachers need to share their perspectives, inquire into those of others, and reconsider what they have been doing and how they have been thinking about it. In their book, "The Collaborative Analysis of Student Learning: Professional Learning That Promotes Success for All" (Corwin Press & Learning Forward, 2015), authors Amy B. Colton, Georgea M. Langer, and Loretta S. Goff outline a professional learning design that emphasizes collaborative inquiry with a focus on cultural diversity and equity. This article, which is adapted from the book, provides an in-depth look at one of the communication skills essential to the collaborative inquiry process.