Backbone Support Staff

Backbone Support Staff

The Backbone staff serve as a catalyst to unify and convene the Partners.

The staff works 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.

Ann Mathieson – Chief Executive Officer

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

Michael LooftDirector of Technology

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. Michael can be reached at

Maria Niggle – Director, Early Childhood & Community Collaboratives

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

Cameron Hunter – Director, Data and Operations

Driven by a deep commitment to cross-sector collaboration, Cameron’s leadership experience in consulting, data analysis, and project management spans nonprofits, governmental organizations, and social enterprises. Prior to joining Marin Promise Partnership, Cameron worked with Schaffer & Combs, a social-sector management consulting firm based in San Francisco, specializing in strategic planning and impact evaluation. 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’s commitment to educational equity spans back to his early days; 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. He can be reached at

Juliet Schiller – Director, County-wide Anti-racist 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 juliet@marinpromisepartnership.or

Shelley Hamilton – Director, Research & Communications 

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 – Director, College & Career

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

Robin Pendoley- Director, County-wide Collaborative Action

Robin is an educator with expertise in social impact leadership, educational equity, and nonprofit management. A Bay Area native, he grew up in the public schools in Vallejo and San Rafael, California witnessing the inequity and injustice of our education system. Prior to joining Marin Promise Partnership, Robin served in various positions in a diverse array of public schools, including as a teacher and administrator. He then spent thirteen years founding and leading Thinking Beyond Borders, an educational institution developing social impact leaders rooted in critical consciousness. Robin holds a BA in International Development Studies from UCLA and an EdM from the Harvard Graduate School of Education. He has a spouse and daughter, and he can often be found running the trails of Marin County. Robin can be reached at

Marjorie Delgadillo- Manager, Youth, Family, and Community Collaboratives

Marjorie is a multicultural professional, as an unyielding advocate in her 22 years of service to the BIPOC youth of Marin County, focused on elevating the voice of the undocumented and foster youth. She has dedicated her professional career to authentically uplifting the often marginalized lived experience of the many within our community who are segregated to live/ work among shadows. Marjorie spent 6 years working with youth across the community while working as a health educator with Huckleberry Youth Programs and 4 years supporting early care educators as a bilingual resource and referral program specialist at Marin Child Care Council. In addition she has been able to take her dedication to youth caught in the child welfare system to the halls of congress assisting Congress-member Karen Bass to enact the first bi-partisan Foster Care Caucus within the U.S. House of Representatives. She has spent the last few years consulting, providing cross sector connections, contributing talent and passion to local nonprofits as well as philanthropist urging us all to make an investment for a more equitable Marin. 

She is a member of the SF Foundation Koshland Civic Unity Fellows, Marin’s Boards and Commission Leadership Institute as well as Bay Area Leaders for Equitable Opportunities.  Marjorie can be reached at

Ana Do Rosario Sousa – Coordinator, Data & Collaborative Action

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

Jacqui Esquivel Vasquez – Coordinator, Partnership Operations

Born and raised in Marin County, Jacqui is a recent graduate from the University of California, Berkeley, where she studied Economics and was actively involved in campus life and student leadership development. Jacqui strives to be a servant leader and embody the values of joy, compassion, and respect in everything she does. When not at work, she can be found enjoying sunrises, foggy mornings, and works of art such as Monet’s “Water Lilies” and Frida Kahlo’s self-portraits — to name a few. Jacqui can be reached at

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