This document provides guidance for school improvement coaches and their supervisors. It outlines the role of a school improvement coach in assisting a school's improvement team through each stage of the improvement process: assessing the current status, planning for change, implementing plans, monitoring progress, and revising plans based on new data. The coach serves as an external guide to build the team's capacity for long-term improvement. The document also offers recommendations for selecting, training, and supporting coaches, as well as monitoring their work with school improvement teams.