The English Learner Roadmap was a landmark policy adopted by the California State Board of Education in 2017. While it set the foundations for how schools might better meet the needs of multilingual leaders, the promise of this revolutionary policy has not yet been realized. Outcomes for English learner students have not improved and many schools and districts continue to struggle to recognize and address the diverse needs of multilingual learners. In 2021 Teach Plus California launched the Emergent Bilingual Change Agent Network, supporting teacher leaders to spearhead change at the local level that reflects the principles of the English Learner Roadmap. Since then our three cohorts of teacher leaders have made an impact in 52 communities throughout California, as Teach Plus California has supported them in identifying barriers to implementation of the EL Roadmap and developing change ideas to overcome those barriers. Teacher Leaders have led implementation efforts that successfully addressed a range of issues, including improving educator awareness of the Roadmap, creating assets-oriented and needs responsive schools, and more robust and integrated data systems. Teach Plus California also launched the EBCAN Alumni Mobilization effort to expand local change efforts to a more regional and systemic level.