Over the past three years, Jobs for the Future (JFF) has engaged deeply with California Career Pathways Trust (CCPT) consortia through both statewide research and technical assistance in order to understand leaders' approaches to implementing and developing sustainable programs. JFF's recent research found that the CCPT funds did advance programmatic priorities like developing new pathways and increasing student participation in pathways. However, it also revealed that the initiative's ambitious goals of building regional systems of cross-sector partners that would sustain and expand pathways after the grant period went largely unrealized. In this final installment in a series of three briefs about the CCPT grant program, the leaders of four CCPT consortia--the Fresno Unified School District, the Los Angeles High Impact Information Technology, Entertainment and Entrepreneurship, and Communications Hubs regional consortium (or LA HI-TECH, led by the Pasadena Area Community College District), the Northern California Career Pathway Alliance (NCCPA, led by the Sonoma County Office of Education), and the Tulare-Kings Pathways Project (Tulare County Office of Education) describe their experiences in leveraging the CCPT opportunity as a vehicle for not only improving career pathways, but also establishing deep regional collaboratives and transforming the systems that support career pathways. [For the other two briefs in this series, see ED594015 and ED593986.]