Board of Directors


Temple Grandin School is currently receiving applications for new board members. If you believe in the mission of TGS, and are willing to take an active role in helping us engage the larger community in our work, please contact us!

Current Board Members

1240034_601576136587880_1701679599_n - Version 2Mike Campbell - Board Chair
M.A., American Intellectual & Social History, University of Colorado
B.A., Fort Lewis College

Mike is recently retired after almost forty years in public education. He serves on the faculty of Regis University as an Affiliate Faculty and Instructor in the Principal Licensure and Curriculum and Instruction Masters of Education Program, and on the Colorado Staff Development Council Advisory Board. In his spare time, Mike serves with the Peer Review of Educator Preparation Programs (PREPP).

Mike has filled many roles within public education. After, and often during, his 24 years in the classroom, he served as Coordinator of Alternative Programs, Staff Developer, K-12 Social Studies Curriculum Coordinator, Coordinator for At-risk and Crisis Programs, Trainer for Suicide Intervention, Athletic Director, Assistant Principal (3 years), Principal (10 years) and Metanoia Dynamics—Educational Consultant.

Unknown-1Charles Bergren - Board Co-Chair
M.S. EE, Electrical Engineering, Cornell University
B.A., Theoretical Mathematics, Cornell University

Charles has spent 40 years (and counting) as an electrical engineer in the communications and software industries. He has done extensive work with C++ using Visual Studios and has a record of community leadership and teaching. He is the parent of a former TGS student, who is now independently employed in the software industry.
UnknownNadia Repenning – Board Member

Nadia is CEO of AgentSheets, Inc. After obtaining a business degree in her native Switzerland, Nadia moved with her husband to Colorado while he pursued a doctorate at the University of Colorado. They decided to remain in Boulder, and in 1996, founded AgentSheets, Inc. to commercialize his simulation-authoring software for use in education. Nadia has been at the helm of the commercial aspect of building the company; winning grants from the National Science Foundation, managing projects, finances, launching products, and running the day-to-day operations of the company. AgentSheets, Inc. software has been used by everyone from grade school students to NASA scientists.

Nadia has a long history of volunteering her expertise in Boulder County, working for the Red Cross, and in schools across the district. Through AgentSheets, Inc., Nadia spearheads the corporate giving across national lines, bringing technology to underprivileged school districts, enrichment programs, and reservation schools.

2f43620Nathan Seiler – Board Member
J.D., Northwestern University School of Law
B.A., Psychology, University of Nebraska-Lincoln

Nathan is a partner at Gross Cutler Seiler Dupont LLC where his practice focuses on corporate, securities and transactional matters, including public and private offerings, mergers and acquisitions, corporate governance and securities law disclosure and compliance. He represents companies in a broad range of industries, including software, telecommunications, life sciences, medical devices, clean technologies, and manufacturing.

Nathan enjoys spending time with his wife Valerie and their three young daughters, Meredith, Olivia and Milaina. He is also a member of the First Presbyterian Church in Boulder.

140e126April Sawyer – Treasurer
B.S., Regis University, Accounting, Magna cum Laude

April is a high-level corporate controller and analyst with seventeen years in corporate and management accounting. April has worked as an accountant for Pearl Izumi, and currently serves as controller for Ayre Acoustics. She applies her financial and business skills to support TGS’ healthy organizational growth and development.
Unknown-2Sarah Treharne – Board Member
M.A., Speech Language Pathology, University of CO

Sarah serves as a bilingual speech-language pathologist for Rocky Mountain Autism Center. In addition to her SLP credentials, she holds a B.A. from Virginia Tech, and an M.A. from Indiana University. After completing a Fulbright Grant in Uruguay and practicing early intervention in Virginia, Sarah settled down in Wash Park with her husband Andy and their dog Buster. With the birth of her daughter in August, 2014, she has recently added parenthood to her distinguished list of accomplishments!