IISC is a nonprofit organization that partners with individuals, organizations, and communities to achieve greater social impact. Our mission is to ignite and sustain social transformation, catalyze collaborative action, and build collaborative skill to bring alive our vision of a just and sustainable world. We accomplish this by providing network building, consulting, facilitation, leadership development, and training services to:
- Networks, collaboratives, and coalitions
- Nonprofit organizations of all sizes
- Schools & school systems
- Intermediary organizations
- Public sector agencies
- International NGOs
- Foundations
We are particularly committed to building the leadership and collaborative capacity of grassroots leaders to engage, speak out, and participate fully in determining the policies and decisions that affect their lives and their communities.
“Without IISC’s help, it would have been difficult, if not impossible to do what we’ve done in the time that we’ve done it.â€
Rev. Dr. Ray Hammond, President
Boston Ten Point Coalition
A Letter from Executive Director Mariannne Hughes More
Marianne Hughes on leadership: Keynote address at the annual conference of Delaware Valley Grantmakers More
Collaboration Across Boundaries: Remarks by Gibrán Rivera at the New England Environmental Education Alliance conference: A Journey Home: Fostering Ecologically Centered Communities More
A Sisterhood for Peace in Sudan More
Engage for Results: Involving grantees in grantmaking strategies More
- Collaborative Social Change: Designing for Impact in a Networked World More
IISC International
Social Change Around the World
IISC’s commitment to working globally is rooted in our belief that on this planet we are all one family.

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Social Transformation
by Skillful Means
Our work demonstrates the power of bringing together key stakeholders to create a shared vision and strategies for concerted action to achieve social change… More
Highlights of Our Work | Testimonials | Case Studies