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About

Our Leadership

Meet Holy Trinity's Interim Head of School

Jonathan (“Jon”) Kellam was appointed Interim Head of School at Holy Trinity Episcopal Academy by its Board of Trustees on July 1, 2025. He brings nearly three decades of experience in independent school leadership, a deep commitment to community, and a proven record of thoughtful, values-driven leadership.
 
Prior to joining Holy Trinity, Jon served at The Oakridge School in Arlington, Texas, for over 30 years, including 15 years as Head of School. During his tenure, he led a number of significant initiatives, including major capital projects and endowment growth, while cultivating a school culture rooted in care, connection, and excellence.
 
Following his retirement from Oakridge in 2022, Jon remained actively engaged in the independent school community through leadership consulting and executive coaching, supporting schools navigating periods of transition and change. Most recently, he served as Interim Head of School at Kentucky Country Day School in Louisville, concluding his tenure at the end of the 2024–2025 academic year.
 
Colleagues and those who have worked closely with Jon describe him as a “master communicator” with a gift for bringing people together. 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 of School, Jon is guiding Holy Trinity through an important period of transition while helping position the school for its next chapter of growth and development. A key priority of his leadership is the implementation of Holy Trinity’s 2025–2028 strategic plan, Honoring Our Legacy. Inspiring Tomorrow. Developed through an extensive collaborative process involving the Board of Trustees, school leadership, students, families, faculty, staff, and other key stakeholders, the plan affirms the school’s commitment to academic excellence, strengthens community, reimagines learning environments and programs, and ensures responsible stewardship of the school’s resources.
 
Jon is expected to serve as Interim Head of School through July of 2028. The search for a permanent Head of School is scheduled to begin in early 2027.
 
Jon and his wife, Kristi, reside in Satellite Beach and divide their time between Florida and Texas. They have two sons.



 

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#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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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
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