Leadership Team

Dr. John Gredy, Head of School

Before coming to Dayton Christian as Head of School, Dr. Gredy served as Vice-President for Enrollment Management and Marketing at Cedarville University, Indian Wesleyan University, and Trinity International University. In addition, he was the Executive Vice-President for Strategic Growth at Cedarville University and its Provost. Dr. Gredy also has experience at the elementary and secondary level serving as the Chairman of the Board of Westlake Christian Academy in Chicago. He previously acted as the Director of Development and Community Relations for Dayton Christian School

Email Dr. Gredy


James Holliday, M. Ed., Elementary Principal

James took on the role as Elementary Principal this year after serving for the past nine years in various capacities at DC, including teacher, and most recently, Jr. High and High School Principal.

As Elementary principal, James is tasked with increasing enrollment in preschool through 6th grades, strengthening academic initiatives such as math and science, and retaining and building upon our outstanding faculty base. His passion is to see DC become the school of choice for both spiritual formation and academic excellence.


Gabe Pethtel, M. Ed.

High School / Middle School Principal

We introduced Gabe to our community last spring when he was hired as Junior High and High School Principal. In his role leading our 7th through 12th grade division, Gabe oversees development and administration of Academic Advising and Life Calling, Special Educational, and Spiritual Life.

He has a passion to see our school flourish as the premiere Christian school of excellence. He also desires for students and families to deeply know their life’s calling and what it means to have an eternity through Jesus Christ.


Chief Operations Officer

Lisa is the newest member to our leadership team and DC family. Lisa joined DC this summer to assume the role of Chief Operations Officer. As COO, Lisa is responsible for multiple areas within the school including human resources, transportation, and food services.

She began her career as a civilian in the United States Air Force where she worked for nine years with contracts. She then spent more than 20 years at Cedarville University serving in various human resource roles, including Associate Vice President, and focused on key areas such as staffing, recruiting, on-boarding, compensation, compliance, training, and development.

Theresa Powell, CPA, Chief Financial Officer

Theresa has been with DC for nearly 10 years, in which time she has successfully led our community in a journey to become financially strong. Her team’s hard work can be seen in our most recent auditor’s report, which last spring was deemed one of the strongest in DC’s history.

As CFO, Theresa is responsible not only for her finance team, but also for all facilities on campus. While facilities is new to her plate, God is already using her talents to think of ways to maximize our space and be good stewards of our savings for future projects.

Julie Thompson

Chief Enrollment Management & Marketing Officer

Julie arrived at DC two years ago in order to help lead the marketing efforts for the Warrior Center project. Julie brings nearly 20 years of experience in marketing and public relations – a skill she continues to provide to organizations in our community.

As lead over admissions, marketing and communications, Julie is responsible for creating a culture of growth throughout the entire institution. She guides efforts aimed at recruiting and retaining strong partner families, and expanding the awareness of DC throughout Greater Dayton. Her team’s work is already paying dividends as we enjoy one of our higher retention rates and healthiest enrollment increases in recent years.

Instilling ... Inspiring ... Equipping