Adrienne McMillon, CPA, CIA, CRMA, MBA serves as Senior Director, Internal Controls Governance and Enterprise Risk Management at Cox Automotive.
Adrienne has 20 years of global business experience in accounting which includes controllership and general ledger accounting at a mid-sized industrial company; financial reporting at a
publicly traded company; and audit and assurance services at one of the “Big 4” accounting firms.
Adrienne’s career highlight is living as an expat in Bristol, UK where she served as the interim Finance Director for a publicly traded packaging company. Her extensive and varied
experience has helped her to develop a solid and comprehensive understanding of financial and business operations which allows her to effectively apply control management techniques to
business risks.
Adrienne holds a Bachelor of Business Administration in Accounting from Georgia State University and a Master of Business Administration from Kennesaw State University. She is a Certified
Public Accountant, a Certified Internal Auditor and she holds a Certification in Risk Management Assurance.
Adrienne is an active member of the community. She serves as Vice Chair of the DeKalb County Audit Committee and is a 2025 graduate of Leadership DeKalb. Adrienne lives in Atlanta with her
husband and her two daughters. When she is not spending time with her family, she enjoys volunteering, traveling, overconsuming media content and experiencing new cuisine.
Feifei Sun is a writer and editor with nearly two decades of experience in communications and content. She is currently an executive editor at McKinsey & Company. Previously, she was an editor at Vanity Fair and Time magazines, covering politics, business, and culture. Born in China and raised in Savannah, GA, she lives in the Briarlake neighborhood with her two children.
Stephen is a native of Atlanta, GA and a graduate of Emory University’s class of 2005 with a BA in Economics. After graduating, he
relocated to NYC to begin his career at Deutsche Bank in Structured Finance & Credit Trading. In 2018 he returned to Atlanta to lead a multi-billion dollar bond trading desk at Invesco
Ltd. as Senior Trader and Portfolio Manager.
Stephen has broad and deep experience in global finance and capital markets through all points of the business cycle, with special expertise in risk management, hedging strategies and
portfolio allocation. These attributes will serve him well in his role as GLOBE’s Treasurer and Finance Committee Chair, particularly as the school grows and gains influence within the
community and DeKalb County School District.
He’s very excited about bringing a fresh perspective to the Board and adding value wherever possible. Stephen has one child at GLOBE (soon to be two) in the French track, and is an avid
sports fan and movie buff. He hopes to be very involved in the sports scene here at GLOBE through coaching, fundraising and volunteering.
Holly Portier is a native of Atlanta, Georgia. Her academic journey began at the State University of West Georgia, where she graduated magna cum
laude with a bachelor's degree in English. Before venturing into the legal field, she dedicated four years to educating and inspiring students as a high school English teacher.
Upon deciding to pursue a legal career, Mrs. Portier enrolled at Georgia State University, where she pursued her Juris Doctor degree and graduated cum laude in 2008.
Since 2008, Mrs. Portier has focused her legal practice exclusively on workers' compensation, where she passionately represents individuals who have been injured or disabled in the workplace.
Beyond her professional commitments, Mrs. Portier actively engages in volunteer work with the Atlanta Junior League, Georgia Center for Child Advocacy, Georgia Legal Foundation and St. Martin
in the Fields, demonstrating her commitment to serving and uplifting her community. She cherishes her time with her husband, Bailey, and their son, Ted.
Breck is a former U.S. diplomat and intelligence officer with more than 15 years of experience developing innovative solutions to complex global challenges. He has a robust track record managing strategic initiatives with competing priorities and timelines in fast-paced, high-pressure environments.
Dr. Jasmin Tanaja is an Emergency Medicine physician practicing in Atlanta for the past 10 years.
Originally born in Germany and raised in Indonesia, she went on to study medicine in Poland. Before medical school, she had the privilege of mentoring first-generation college-bound students,
helping introduce them to healthcare careers in hopes of addressing disparities in the field. She now lives in Atlanta with her husband, who is from Sweden, and their two young boys
Sarah Yasyerli has over 15 years of experience in the International Development world, working both in program and contract management roles on global health and
higher education projects throughout Sub Saharan Africa, Southeast Asia, and Central Asia.
She has a BSFS in International Culture and Politics from Georgetown University and was a U.S. State Department Critical language scholar studying Turkish in Istanbul, Turkey.
After college, Sarah spent a year teaching English at an elementary school, where she met her husband, Anil and slowly convinced him to move back to the U.S. She lives in Decatur with her
three children (two on the French track at GLOBE), husband, and dog.
Polly Castro, MSM, CPMSM, CPCS brings a wealth of experience and expertise to the Board of The GLOBE Academy, with over 14 years of dedicated service in the
healthcare industry, specifically in human resources within the pediatric sector. Her strategic vision and leadership skills have been instrumental in navigating complex regulatory
environments and implementing policies that align with best practices in pediatric healthcare.
As a Board member, Polly looks forward to contributing to The GLOBE Academy's strategic planning and governance, ensuring that it continues to thrive and inspire future generations. She holds
a Master of Science degree and is an advocate for lifelong learning and professional growth. She resides in Embry Hills, where she enjoys running, and spending quality time with her husband,
two sons and very active German Shepherd.
Nathan's bio will be provided shortly.
Dr. Tiffany Simpkins Russell is a mother, author, advocate, and educator with over 25 years of experience in teaching, training, and
curriculum development. She is passionate about empowering individuals and fostering inclusive learning environments. Currently, she serves as the Director of Diversity, Equity and
Inclusion at The Galloway School and is a member of the Boards of The GLOBE Academy and St. Benedict's Episcopal School.
As an educational consultant, Dr. Russell specializes in leadership and organizational development, change management, and workplace diversity. She frequently presents at national conferences
and participates in panel discussions on topics ranging from program evaluation strategies to self-care in the workplace. Her expertise also includes designing qualitative and quantitative
research tools, nonprofit grant writing, and government proposal writing.
Dr. Russell’s research uses personal narratives as liberatory tools for women of color and womanist pedagogies. She is the author of A Song for Miles, a children's book
that fosters curiosity, a love of music, and the importance of good character. The book is available on the App Store and Amazon Kindle.
A native of Trenton, New Jersey, Dr. Russell is a proud graduate of Blair Academy. She earned her BA and MA in African American Studies from Temple University and her doctorate in Educational
Policy Studies/Social Foundations of Education from Georgia State University. An avid ceramicist, she lives in Atlanta with her husband, Jason, and their two children, Miles and
Olivia.
Daniela Torre Gibney, Ph.D., has been working to support and improve schools as a teacher and researcher for over 15 years. She is dedicated to working with
educators and school and system leaders to ensure that all students experience high quality educational opportunities.
As a senior associate partner at Bellwether, a national nonprofit research and consulting firm, she focuses on supporting programs and informing policies that improve teaching and school
quality, particularly for multilingual learners and marginalized students. Daniela is an expert at designing and implementing complex mixed-methods evaluations and research projects as well
as providing technical assistance to organizational leaders focused on using data for continuous improvement.
Daniela received her doctorate in leadership and policy studies from Vanderbilt University and earned a master’s degree in teaching English to speakers of other languages from American
University in Washington, D.C. She taught in bilingual, English as a second language, and general education classrooms for five years in Washington, D.C., and Brooklyn, New York. She lives
with her partner and two kiddos in DeKalb County.
Michelle Hayes has 20 years of experience in the Quality Assurance and Quality Systems arena, working primarily in the medical device, IVD
and consumer goods industries.
Michelle is an ASQ CQA, CBA, CPGP and CMQ/OE, with expertise in quality program development, and remediation of quality gaps through optimization and standardization of process procedures.
Michelle has led quality improvement projects for supplier quality management, quality system development and audit programs. She has a passion for continuous improvement and driving
collaborative ways of working that drive results.
Michelle Hayes was born and raised in Barbados, and now resides in Atlanta GA with her family. She grew up with her parents and sister in Barbados and moved to
the US to attend the University of Georgia, where she received her BS in Biological Engineering and later her MS in Regulatory Affairs.
In her free time enjoys serving as Board member with organizations locally and globally centered around education and youth, tutoring math and science,
exercising and spending time with her husband, son, family and friends.
