This document summarizes a study on the role of coaching in telecollaborative language exchanges. It discusses how coaching was provided to 269 teachers through 550 hours of support before, during, and after telecollaborative sessions. Surveys of teachers found that coaching greatly improved their organizational, pedagogical, digital, and attitudinal competencies, especially in designing exchanges and using online tools. While the study had limitations due to sample size and being based on teacher perceptions, coaching was highly valued by teachers and helped provide necessary support for innovating their practices.