The MasterCoach program is a trainer certification program using a transformative blended learning approach, giving trainers a professional edge in facilitation and a long-lasting impact in terms of enhanced personal and professional identity. While most Training of Trainers (ToT) programs are usually content-focused, aiming at improving subject-specific knowledge, the MC program supports trainers and educators to develop essential life and soft skills throughout the five-month training course. The framework was established by 4th Wheel to guide a consistent, transparent, and context-sensitive Monitoring, Evaluation, and Learning (MEL) framework of Quest Alliance’s MasterCoach (MC) program. A crucial outcome was a validated Theory of Change (ToC) which the program evaluation is based on.