About One and All
At One and All, we support individuals, families, teams, and organizations with restorative conflict resolution, advocacy, and tools for more inclusive communication. From tailored mediation services and conflict resolution resources to custom trainings and workshops, we’re here to help build stronger, more connected communities—one conversation at a time.
In addition to conflict resolution and advocacy services, we offer a wide range of resources designed to support long-term, systemic change. This includes:
Custom workshops, trainings, and materials that build emotional intelligence, strengthen communication, and teach practical conflict resolution skills.
Advocacy and guided support for individuals and families navigating complex interpersonal or systemic challenges.
Consulting for organizations and community groups seeking to create more collaborative, inclusive, and responsive environments.
At One and All, we’re here to uplift voices, address conflict with care, and help every person, team, and community feel seen, supported, and empowered.
One and All was founded by mediator, restorative justice facilitator, policy advocate, and educator Bri Sullivan.
Bri began her conflict resolution and advocacy work at the DC State Board of Education, where she helped collaboratively resolve school-based issues related to truancy, bullying, safety, discipline, and special education concerns. Inspired to do more and reach families and educators everywhere, she founded One and All—a practice rooted in equity, communication, and community care. Bri helps individuals and organizations navigate challenges with clarity and compassion, while also supporting capacity building and proactive approaches that strengthen systems and prevent future conflict. Her work centers on building stronger relationships, inclusive environments, and lasting solutions.
Her practice and work are dedicated to the memory of her brothers, Brett and Sean, whose lives and losses instilled in her a deep commitment to compassion, justice, and the healing power of community.
Bri Sullivan, M.Ed
Founder & Executive Director
