About Teach CA

Sydney Altfield serves as National Director of Teach Coalition. She previously held the role of Teach NYS Executive Director. Prior to Teach, Sydney was a Development Fellow at the American Israel Public Affairs Committee (AIPAC). Sydney graduated from the University of Central Florida with a B.A. in Event Management and a minor in Leadership Studies. During her time at UCF, she served as Student Body Vice President where she presided over the largest number of constituents in the nation. As a product of a Jewish day school in Miami, Florida, Sydney is passionate about Teach Coalition’s mission and the future success of our schools.

Elina Mosheyeva serves as Director of Marketing & Communications at Teach Coalition, where she leads the organization’s national communications, brand, media, and digital strategy in support of equitable funding, security, and resources for nonpublic schools.

With more than a decade of experience in strategic marketing, storytelling, and integrated communications, Elina specializes in translating complex policy and advocacy goals into compelling narratives that mobilize communities, engage policymakers, and inspire philanthropy. She serves as a strategic advisor to executive leadership and partners closely with policy and development teams to amplify impact across multiple states.

Elina holds an MBA and brings a data-driven, mission-focused approach to building trust, visibility, and long-term advocacy impact.

Miriam Mark is a revenue growth leader and go-to market specialist who serves in an advisory and fractional capacity for leading technology and nonprofit companies. She has grown up alongside the tech ecosystem, running sales at multiple startups. Miriam served as global head of Account Management and Growth Enablement at WeWork, and was instrumental in building their global sales organization from acquisition to retention and growth. Earlier in her career, she led sales at Farmigo, an online farmers market, with the mission to transform and accelerate global adoption of an alternative food system. She began her career at Shopping.com, an online comparison-shopping company acquired by eBay. Miriam is passionate about creating equal educational opportunities for all children regardless of ability, inspired by her oldest child with special needs. She lives in Los Angeles with her husband and four children ages 9-19.