One Stone | Team
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About One Stone


One Stone is a student-led and directed nonprofit that makes students better leaders and the world a better place. Our program empowers high school students to learn and practice 21st century skills through experiential service, innovative initiatives and social entrepreneurship.


Our work is rooted in design thinking, a creative problem solving and innovation discovery process developed at Stanford University’s Using design thinking, we can uncover new ideas that allow us to disrupt for good – improving the status quo for lasting change. Through this, students learn and practice critical 21st Century skills: empathy, collaboration, communication, leadership, innovation, critical thinking, adaptability and creativity.


One Stone does not charge membership dues or fees, ensuring that our programs are accessible to any high school student who wants to be a better leader and make the world a better place.


About the Board



Bella Archibald
Hayden Cooper
Connor Duncan
Zoe Eicher
Katy Hilburn
Hayden Irish
Kent Ivanoff
Alex Koehl
Jack Johnson
Geneve Lau
Treacy Liebich
Ally Lloyd
Sam McEwan
Eli Neal
Cheyenne Nienstedt
Peter Oliver
Rowan Pierson
Joel Poppen
Roger Quarles


About the Team


Teresa Poppen
One Stone Founder
Executive Director
(Ultimate Difference Maker)

Teresa Poppen, together with her husband Joel, co-founded One Stone in 2008. Prior to this, she worked for more than 20 years in product marketing, strategic planning, marketing research and communications in the high-tech industry. During that time she served as strategic marketing director at Compaq; and vice president of marketing at Tangram and Microtest. She has a long history of engagement in the nonprofit and education arenas, serving as a board member for Riverstone International School and Big Brothers Big Sisters of Southwest Idaho, and as a “Make A Wish” grantor for multiple children with life threatening illnesses.

Theresa Fox
Finance Director
(Numbers Ninja)

Theresa has 25+ years of accounting experience between public, governmental, private industry and not-for profit sectors. A member of the One Stone team from the very beginning, Theresa has served in a wide range of roles above the traditional CPA finance director—working with students as the One Stone Operations Committee coach and serving on many Project Good projects. In addition to her work with One Stone, Theresa has served as treasurer on four non-profit boards of directors as well as performed service in connection to her love of the outdoors via outdoor education, snow school and ski patrol. Theresa has an undergraduate degree in accounting from the University of Baltimore and an M.P.A. from the University of Oklahoma.

Ashlee Greenwood
Project Good Director
(Chief Do-Gooder)

Ashlee was One Stone’s first paid employee, and prior to that, a committed volunteer. She brings logistics wizzardry to One Stone in operations and programs. Prior to One Stone, Ashlee applied these skills as a Hazard Mitigation Advisor Specialist, Community Education and Outreach Specialist for FEMA. Ashlee has a B.S. and an M.B.A. in business administration from Lynn University.

Neva Geisler
Community Engagement Director
(Opportunity Wrangler)

Neva brings 20+ years of experience in nonprofit and higher education to the One Stone team. As a fifth generation Idahoan, she is passionate about engaging all people in community building and future shaping. Neva has a B.A. in political science from the College of Idaho, and a Master’s degree in communications from the Edward R. Murrow School of Communications at Washington State University. give her a shout!

Michael Reagan
Two Birds Director
(Creative Catalyst)

Michael comes to One Stone from the creative services industry, where worked at DaviesMoore, a Boise-based marketing firm and advertising agency, for 17 years. During his tenure there, he served as VP of Creative and Creative Director in charge of developing brand and creative strategy, concept development, graphic design and copywriting. Michael joined One Stone in 2016 as director of the Two Birds program, where he provides coaching for students on subjects ranging from design, to client management, to social entrepreneurship. Michael volunteers as a soccer coach and is a member of the Usful Glassworks board of directors. He has a B.A. in public communication from University of Idaho.

Mitch Kuhn
Two Birds Associate Director

Mitch started his time with One Stone as a volunteer Two Birds Coach. Prior to joining our team he was an art director at Oliver Russell, a Boise-based advertising agency. Mitch has worked with a wide range of companies and organizations including the Ronald McDonald House, the 2012 Track and Field Olympic Trials, HP, City of Boise, and Idaho’s Bounty. He has a B.A. in Journalism: Advertising from the University of Oregon.

Megan Kittridge
Project Coordinator
(Dynamic Doer)

A Boise native, Megan has 10+ years of experience working with kids. From 2006-2009 she spent her summers at Paradise Point Camp as a counselor and program director. During the school year she worked at the Lummi Nation Reservation School as a student mentor and lead student mentor through the Compass 2 Campus program. Megan graduated Magna Cum Laude from Western Washington University with a B.A. in outdoor education. Following graduation, Megan continued her work with kids at Pioneer Meadows Montessori School and Hays Shelter Home (a program of the Idaho Youth Ranch), where she served as a Youth Specialist and Recreation Specialist. Megan joined One Stone in 2015. She is currently pursuing an M.P.A. with an emphasis in nonprofit management through the University of Colorado: Denver.

Charla Cooper
School Counselor
(Curator of Change)

Charla first joined the One Stone team as our Curator of Change. She was instrumental in helping to build and shape the school during our investigation and launch phase. Charla now serves as the One Stone school counselor. She has a B.S. from the University of Mississippi, an M.Ed. from Vanderbilt University, and is an NBCC Licensed Professional Counselor.

  Chad Tony
Mariel Zupsic
Project Coordinator
(Can-Do Captain)

Mariel is game for anything. Design, plan, manage, run, cartwheel- she can do it all. But her special talent is helping make One Stone’s partnerships shines. Mariel jumps right in and isn’t afraid to shake things up. With her extensive bag of tricks, there’s nothing she can’t do.

Emily Mulnick
Spanish/Science Academic Coach

Emily grew up in McCall, Idaho. After high school, she spread her wings through a study abroad program in Italy. She went on to earn her B.S. in anthropology/biology with a spanish minor from Western Washington University, where she also led trips for their Outdoor Program. Before coming to One Stone, Emily taught science, spanish, and leadership at the Alzar School – leading international trips and outdoor expeditions.

Chad Carlson
Humanities Academic Coach

Chad has been in the field of independent education for more than seventeen years, working with both middle and high school students in the areas of humanities, language arts and spanish. He recently returned to Boise after several years at an International Baccalaureate School in Bogotá, Colombia and at an independent school in Sun Valley, Idaho. Chad received his B.A. in humanities from the University of Oregon and his M.A. in Latin American studies from UCSD and is currently working towards his Masters in Educational Leadership at Boise State University.

Tony Pori
Math Coach

Tony founded the Math Advantage in 1999, offering tutoring service to students throughout the Treasure Valley. In his 18 years as a tutor, he has ignited a love of math in countless students, leading with a philosophy of meeting the learners where they are. In addition to his work with One Stone, Tony is an avid runner and climber, and a former member of the Alzar School Board of Directors.

John Brassey
Math Coach

John is a lover of math. While earning his B.A. in English at the University of Montana he worked as a math tutor to stay engaged in the subject. After graduating, John worked in product management at Clearwater Analytics, all the while continuing his passion for math as a freelance tutor. John passionately believes that everyone can do math given the support and the right experience.

Jasmine Wilhelm
Art Coach

Jasmine brings a diverse skill set to her role as Art Coach at One Stone. She has a B.A. in studio art and recreation from Western Washington University. She has experience empowering individuals with disabilities as an adaptive river guide, adaptive sea kayak guide on Lake Superior and as an adaptive ski instructor in Park City. In addition to her work at One Stone, Jasmine is a photographer and author of elementary education curriculum books.

Teal Gardner
Air Traffic Controller

Teal came to Boise in 2016 from Omaha, Nebraska, where she was actively promoting free outside play opportunities in public spaces for children. As part of her advocacy, she created the Sally Foster Adventure Playground, one of the first of its kind in the country. At One Stone, Teal is a Renaissance woman–she helps to manage our day-to-day operations while coaching in a variety of capacities. In addition to her work at One Stone, she serves the community as a volunteer at Artisan’s for Hope and the Boise Bicycle Project. Teal has a B.A. in art/anthropology/English from the University of Nebraska – Lincoln.

Trash the Dog
One Stone Mascot
(Quiet Companion)

When we say, “That dog is Trash!” we do it with a smile on our face. Trash is the product of a litter pick up done for Think4Ward, a 2012 One Stone environmental awareness project. He’s an adorable little chicken wire mutt filled with trash we picked up that would otherwise be drifting in the wind and down the river, and for a fake dog, he’s a plucky little thing.