ADELPHIA CLASSICAL CHRISTIAN ACADEMY
Cultivating a rightly ordered love of Truth, Beauty, and Goodness
Established 2014
Copyright © 2024 adelphiaclassical.com
Adelphia Founders
established 2014
Let us not grow tired of doing good, for in due time we shall reap our harvest, if we do not give up. Galatians 6:9
​Adelphia Classical Christian Academy was established in 2014 by a group of Protestant believers dedicated to providing a Christ-centered education for their families. While the Academy remains rooted in these foundations, the 2020 transition marked a significant era of expansion and a deepening commitment to our classical Christian identity. During this time, the Academy focused on establishing the professional and academic infrastructure necessary to ensure its long-term viability as a K-12 institution. Today, Adelphia provides a classically centered academic environment where families from various traditional Christian backgrounds can learn and grow together. By operating under a shared Christian foundation, the Academy welcomes families and faculty who are in alignment with our mission and Statement of Faith. We recognize that our growth and our ability to keep our doors open have been a Grace from God. Above all, we are dedicated to encouraging each student to grow in their relationship with God, an objective that is furthered by cultivating a rightly ordered love of Truth, Beauty, and Goodness in every student.
Founding Developer of Adelphia's Classical Program
established 2020
Following the 2020 transition, Mrs. Beaver served as the architect for the Academy's professionalized K-12 classical Christian identity. As the Founding Developer, she worked to ensure the curriculum reflected an authentically classical program while establishing the academic infrastructure necessary to provide our students with college-preparatory and honors pathways.
Mr. Christian Bettenhausen
Founder of ACCA (2014)
Board President
General Counsel
Financial Affairs
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Mr. Bettenhausen is the Assistant City Attorney for the City of Westminster (over 15 years) and also serves as City Attorney for other cities. Mr. Bettenhausen specializes in the representation of municipalities, in business formation, non-profit organizations, and in zoning & land use matters. Mr. Bettenhausen also served as Vice President of Veritas Classical Academy. For many years he has served, and continues to serve, as the Overseas Missions Coordinator for Coast Community Church. He has also supported and coordinated the church’s Malawi Mission project. Currently at Adelphia, Mr. Bettenhausen serves as the Financial Director and also serves as the Board President.
Mrs. Diane Bartosch
Founder of ACCA (2014)
Principal (2014-2020)
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Mrs. Bartosch has a background as a Software Engineer. She worked in that field for 11 years. After the birth of her second child, she became a stay-at-home, homeschool mom while owning and operating a software recovery company. She has successfully homeschooled her four daughters from kindergarten through high school graduation - a period spanning over 21 years. Mrs. Bartosch also served as the Administrator of Aslan Academy. She has taught 7th – 12th grades at Home School Family Ministries and Aslan Academy, as well as classical studies at Veritas Classical Academy. Mrs. Bartosch served as the ACCA Principal for six years and has taught both junior high and high school courses.
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Mrs. Tessy Tzoytzoyrakos
Founder of ACCA (2014)
Vice Principal (2014-2020)
Board Vice President
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Mrs. Tzoytzoyrakos is currently a Master Lecturer at the University of Southern California Dornsife School of Letters, Arts, and Sciences. She is also an Adjunct Assistant Professor with Rossier School of Education teaching in the award-winning online MAT-TESOL program. Mrs. Tzoytzoyrakos has many years of experience in the field of education, teacher training, and school administration. She has served on the Board of Directors at Veritas Classical Academy as Secretary. She has also served as ACCA Vice-Principal for six years. Mrs. Tzoytzoyrakos has been homeschooling her three boys for over 10 years. Currently at Adelphia, Mrs. Tzoytzoyrakos serves as the ACCA Administration Operations Director. She also serves as an ACCA Board Vice Principal and directs Academic Affairs.
Mrs. Tiffany Bettenhausen
Founder of ACCA (2014)
Board Member - Administrative Affairs
Admissions Director
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Mrs. Bettenhausen was a teacher at Veritas Classical Academy, and has also taught for Classical Conversations in Orange and Long Beach. She and her husband, Christian, have eight children and they have been homeschooling their children for over 15 years. Mrs. Bettenhausen has also served as the Homeschool Administrator for the Southern California Region (214 families) for the Advanced Training Institute of America (ATIA). Currently at Adelphia, Mrs. Bettenhausen serves as the Admissions Director and supports new students and families as they transition to Adelphia. Mrs. Bettenhausen also serves as a Board member.
Mrs. Mary Beaver
Founding Developer of Adelphia's Classical Program (2020+)
Curriculum and Program Director, Principal (2020-2026)
Mrs. Beaver has been a part of Adelphia since 2018, serving first as a parent volunteer and teacher before transitioning into her leadership roles. Bringing a skill set developed during 25 years as a manager and engineer on significant space programs, she helped build the architecture of the Academy's professionalized K-12 classical Christian program. As a Founding Developer, she worked to ensure that Adelphia students had the same academic opportunities as those in any other school, establishing the three-track diploma system and securing approval for over 30 courses through the University of California (UC) system to open doors for various career and college pathways. In this role, she specifically ensured the curriculum reflected an authentically classical program while carefully recognizing the balance between rigorous academics and the importance of family time. Her leadership was instrumental in securing accreditation through both the Classical Latin School Association (CLSA) and the Western Association of Schools and Colleges (WASC), which helped provide institutional credibility and validated the rigor of the school's high-quality academic standards. Throughout her tenure, she helped grow the Academy’s enrollment while focusing deeply on the school's culture, including the annual Recitation Day and a commitment to remaining grounded in the pursuit of Truth, Beauty, and Goodness.
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