The Backbone Team serves as a catalyst to unify and convene the Partners. We work in the space between systems to connect multiple entities into a seamless network of student support. We are process experts trained in results based accountability, continuous improvement, complex systems change, equity, research, business operations, project management, communications, data strategy, human centered design and group process facilitation.


From Left to Right: Maria Niggle, Nadia Lehrer, Cameron Hunter, Ann Mathieson, Shelley Hamilton, Elizabeth Stoner and Juliet Schiller (not pictured: Michael Looft)


Ann Mathieson - Executive Director

Ann Mathieson is the founding Executive Director of the Marin Promise Partnership. Ann is passionate about educational equity, innovation and community. She also serves on the Bay Area Board of Peer Health Exchange and is a Steering Council Member of New Schools Venture Fund. She was formerly a trustee and Board Chair of the Marin Community Foundation and was elected twice to the Kentfield School Board where she served as President. She was a co-founder and President of the Bay Area “I Have a Dream” Foundation, a college access program for underserved students. Ann worked for 15 years as a marketing executive, first at Hallmark Cards and then with Collagen Corporation. Ann has a BS from Indiana University and an MBA from Stanford University. Ann can be reached at


Maria Niggle - Community Engagement Manager

Maria Patricia Niggle MSW, is an English language learner who came to the United States when she was 3 years old. Her passion for equity in education is the product of her struggles to achieve within systems that were unprepared for diverse learners. She is now a dedicated social worker, co-founder of Abriendo Caminos (an immigrant Leadership Program) and a longtime facilitator of the West Marin Collaborative. As the Community Engagement Manager for Marin Promise Partnership, she brings years of experience in Early Childhood Education Research, program development and collective impact. Maria can be reached at


Michael Looft - Data Architect

Michael has over 20 years of leadership experience spanning the nonprofit, for- profit, and government sectors. He is passionate about leveraging his substantial background in data analysis, capacity building, and partnership development to create educational equity for everyone. Most recently, he spent five years at the crowdfunding at Kiva. He has also spent time in the classroom, teaching computer literacy to adult immigrant populations, at a low-income community center, and to residents at a shelter for battered women. Michael holds an A.S. from De Anza Community College, B.S. from San Francisco State University, and graduate degrees from St. John's College and Harvard.


Cameron Hunter - Data Manager

Driven by deep commitment to cross-sector collaboration, Cameron's leadership experience in consulting, data analysis, and project management spans nonprofits, governmental organizations, and social enterprises. Most recently, Cameron worked as a Senior Associate with Schaffer & Combs, a social-sector management consulting firm based in San Francisco. There, following his service as a Coro Fellow in Pittsburgh, PA, Cameron supported clientele in multi-stakeholder environments to develop and apply strategic frameworks within the environmental sustainability and fashion industries. Cameron is thrilled to return to the world of educational equity; his first-ever job was serving as the Children's Librarian in his small town of Bedford, New York. On the weekend, you'll likely catch him at an outdoor bluegrass concert, watching the latest David Simon series, or playing pub trivia. Cameron holds a B.A. in History from Dartmouth College. Cameron can be reached at


Juliet Schiller - Director of Collaborative Action

Dr. Juliet Schiller is the Director of Collaborative Action at Marin Promise for several Action Teams. Prior to joining Marin Promise, Juliet was a professor of education. Juliet has a passion for equity issues and serving disenfranchised youth. Juliet has been in the field of education for sixteen years. Her research and scholarship focus on the effects and influence of diversity in American education - including the nature of prejudice, culturally relevant pedagogy, public policy, social justice, human rights, and educational opportunity. Juliet was the prior Board President for Canal Alliance and served as Vice-Chair of the Marin Human Rights Commission. She earned her undergrad degree in Colorado, M.S. in Curriculum and Instruction at Dominican University, and Ed.D. in International and Multicultural Education/Learning and Instruction at the University of San Francisco.  Juliet can be reached at


Shelley Hamilton - Director of Collaborative Action

Shelley works as Marin Promise's Director of Collaborative Action for the College Enrollment Action Team. Shelley has over 20 years of experience facilitating strategic and business planning sessions for many organizations, including the Marin Community Foundation, The Agricultural Institute of Marin, Whistelstop, the Marin Aging Action Initiative and the United Way. Shelley can be reached at


Elizabeth Stoner - Manager of Collaborative Action

Elizabeth Stoner is the Milestone Manager of several Action Teams (8th Grade Math and College Readiness Plan) and she also leads the Success Network at Tamalpais High School.  Elizabeth has been an active member of the College Enrollment and College Readiness Action Teams, prior to joining Marin Promise. Elizabeth Holds a B.A. from University of California Berkeley. Elizabeth can be reached at


Nadia Lehrer - Operations Manager

Nadia Lehrer has over 15 years experience as an Executive Assistant and Facilities Manager in both the corporate and non-profit sectors in San Francisco. Nadia grew up in Sonoma County and she is passionate about educational equity and animal advocacy, as well. Nadia has an Associates of Science in Behavioral and Social Sciences from City College of San Francisco. Nadia can be reached at


Ana Do Rosario Sousa - Action Team Coordinator

Ana has a Bachelor of Arts in Psychology, and a Masters of Science in Counseling Psychology. One of Ana’s biggest passions is to provide equality, equity, and support to oppressed and misrepresented populations. As an immigrant who moved to the United States when she was 4 years old, Ana has simultaneously observed and experienced some of the disparities that exist within the systems and institutions she has been a part of. From the individuals she has met, and through her own personal experience, she has become dedicated and motivated to eliminate the barriers and challenges that marginalized populations face. Ana can be reached at