About
Our Leadership
Meet Holy Trinity's Interim Head of School
The Board of Trustees is pleased to announce the appointment of Jonathan (Jon) M. Kellam as Interim Head of School effective as of July 1, 2025. Jon brings a wealth of experience, a deep commitment to community, and a proven track record of thoughtful, values-driven leadership.
Jon served for nearly three decades at The Oakridge School in Arlington, Texas, including 15 years as its Head of School. During his tenure, he led transformative initiatives -- from major capital projects and endowment growth to the cultivation of a school culture rooted in care, connection, and excellence.
Following his retirement from Oakridge in 2022, Jon has remained deeply engaged in the independent school community, providing leadership consulting and executive coaching to schools navigating times of transition and change. Most recently, he has served as Interim Head of School at Kentucky Day School in Louisville, a role he will conclude at the end of their 2024–2025 academic year.
Those who have worked closely with Jon in his various leadership roles enthusiastically describe him as a “master communicator” with a gift for bringing people together, and a leader who inspires trust and collaboration. He is known for his calm and confident presence, his ability to build strong relationships across all areas of a school community, and his commitment to excellence in both academic and co-curricular programming.
As Interim Head, Jon will play a vital role in guiding Holy Trinity through this time of thoughtful transition, ensuring we are well prepared for the search and selection of our next Head of School. One of his first priorities will be to lead the roll-out of our new strategic plan, a bold and future-focused vision that will shape the direction of our school over the next three years.
Developed by the Strategic Planning Committee of the Board of Trustees, in close collaboration with school leadership, and shaped by the voices of students, families, faculty, staff, and other key stakeholders over the past year, this plan affirms and strengthens our commitment to academic excellence, fosters a deeper sense of community, reimagines our physical and programmatic spaces, and ensures we remain good stewards of our resources.
With Jon’s steady guidance, we are confident this plan will not only come to life but also galvanize our community around a shared vision for the future. We are confident his leadership will bring direction and momentum to this next important chapter in Holy Trinity’s continued evolution.
Jon and his wife, Kristi, are excited to join our school community, and we look forward to welcoming them with the kindhearted spirit that defines Holy Trinity.
Meet Our Leadership Team
List of 18 items.
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Interim Head of School
Jonathan M. KellamRead More -
Early Childhood Division Head
Marna NovakRead More -
Lower School Division Head
Jennifer HoffmanRead More -
Junior High Division Head
Melissa EuziereRead More -
Senior High Division Head
Cyndi BuistRead More -
Chief Financial Officer
Michelle DurrettRead More -
Executive Director of Human Resources
Renee SmithRead More -
Director of Development
John RothellRead More -
Executive Director of Marketing and Communications
Nicki HensleyRead More -
Director of Athletics
James PhillipsRead More -
Director of Counseling and Student Life
Kari RamosRead More -
Director of College and Academic Advising
Katina LongRead More -
Director of Enrollment
Sharon EdgertonRead More -
School Chaplain
Reverend Garcia Barnswell-SchmidtRead More -
Dean of Students
Steve HendersonRead More -
Director of Academics and Student Services (Lower School)
Dereck ParkerRead More -
Director of Upper School Academics
Stefanie PediciniRead More -
Chief Information Officer
Claude RussoRead More
#1 in Best Private High Schools in Brevard County
#1 in College Prep Private High Schools in Brevard County
#1 in Best High Schools for Athletes in Brevard County
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#1 in College Prep Private High Schools in Brevard County
#1 in Best High Schools for Athletes in Brevard County
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Lower School Campus
1720 Peachtree St., Melbourne, FL 32901
P: 321.723.8323 | F: 321.473.9777
Upper School Campus
5625 Holy Trinity Dr., Melbourne, FL 32940
P: 321.723.8323 | F: 321.421.0211
1720 Peachtree St., Melbourne, FL 32901
P: 321.723.8323 | F: 321.473.9777
Upper School Campus
5625 Holy Trinity Dr., Melbourne, FL 32940
P: 321.723.8323 | F: 321.421.0211
