Spiritual Formation Principles

Dr. Katherine Schultz works for 3-Dimensional Worldview Survey, and has been a teacher and administrator in ACSI schools for over 35 years. She helps leaders in Christian organizations who struggle to know if their students have a mature biblical worldview by measuring students’ beliefs, behaviors, and attitudes; and enabling educators to help students orient their hearts toward God. Katherine and her husband, TJ, enjoy volunteering at church, reading, traveling, and great food.

Dr. Mark Taylor was born and brought up in India in a Christian family. After a stint of education abroad, he co-founded a Christian school at the age of 27. He then went on to found two more flourishing Christian schools in India. Mark started his journey with ACSI in 2016 and went on to start the India office. This has grown to a membership of over 400 schools in the South Asia region. He also founded Changing Destiny, an organization that rescues and educates children affected by human trafficking.

Noah Brink is both an alumnus of Christian education and has spent his last twenty-four years in various roles within Christian schools as a teacher, coach, head of school, board member, and parent. All along, his passion has been to see lives changed by the power of the gospel, and this has driven Noah’s desire to nurture schools’ abilities to be gospel-distinctive, worldview-aligned, and thoughtfully engaging. This same desire drove Noah to publish his first book, Jesus Above School and to start Renew Education, a ministry designed to promote Christ-centered, transformative, and accessible educational opportunities. Noah and his family live in St. Louis.

Randy McMillan is the Head of School at Renton Christian School, a Church-sponsored school located in Washington State serving students in early childhood through 8th grade. He has been married for 22 years and has three children aged 10-19. He is an avid board game player with over 200 games in his collection and has an app that tracks every game play. Prior to becoming Head of School, Randy served as an Executive Pastor at New Life Church for 15 years and earned an MBA during that time. He is passionate about his faith, his family, and his board games…usually in that order.

Dr. Sosthene Maletoungou is the current Africa Director for the Association of Christian Schools International. In this ministry role, Maletoungou works alongside various ACSI leaders, offices and national associations of Christian Schools to equip thousands of Christian schools across over 30 African countries. Originally from Central African Republic, Maletoungou has 20 years of cross-cultural ministry experience, including in Africa, Europe, America and the Middle East. He holds a PhD in International Education jointly with the Oxford Centre for Mission Studies and Middlesex University. His research focuses on teacher pedagogy and student learning processes in private secondary schools in Francophone Africa, Guinea. Maletoungou is an ordained pastor in the Christian Reformed Church of North America. Married to Kara Maletoungou, they have four boys including John, Nathanael, Isaac and Samuel.

Dr. Debbie MacCullough has taught at the elementary, middle, high school, and university level for over 30 years in both the US and in the Philippines. A graduate of Cairn University (BS in Bible, BS in Education), Arcadia University (MA in Mathematics Education) and Penn State University (PhD in Curriculum and Instruction), she has studied education and how to train others to teach. She loves teaching mathematics, particularly to those who do not find mathematics easy. In addition, Debbie enjoys refining how to train others to help students think from a biblical worldview.  Currently, Debbie works with the Association of Christian Schools International (ACSI) as Director of Global Core Standards. It is her desire to see education that is authentically Christian expand and improve.

Dr. Jason Rachels is the president of Calvary Christian Academy. The main campus, Calvary Christian Academy Fort Lauderdale, has grown to become one of the largest Christian schools in the country. CCA also recently added three other schools to the system: CCA Hollywood (2019), CCA North Miami (2023), and CCA Boynton Beach (2023). Dr. Rachels is passionate about making disciples through excellent Christian schools and enjoys connecting with leaders from all sizes of schools since his work includes both small and large schools within CCA’s school system.

Steve Dang grew up in a family that immigrated from Vietnam and discovered Jesus as a teenager. Today, Steve serves as Chief Ministry Officer and Campus Pastor of Valley Christian Schools. For the past 20 years, Steve has served in various church and parachurch ministries, including work as a ministry innovator with the Fuller Youth Institute and mentor to emerging pastors and ministry leaders with New Frontiers at Westmont College. Steve is passionate about the local church, cultivating healthy teams, and reaching a post-Christian world with the good news of Jesus. He is a stomach cancer survivor, advocate, and chaplain for the gastric cancer community. Steve lives in the San Francisco Bay Area with his wife, Kate, and two daughters, Evangeline and Felicity.

Chas Taylor is a follower of Jesus, husband to his high school sweetheart Madeline, and dad to a 20 month old son. He attended Prestonwood Christian Academy in Plano, Texas, from kindergarten to graduation, then attended Rice University for undergraduate and University of Chicago for law school. He is an attorney at a law firm called Wagenmaker & Oberly, which serves as legal advisors to non-profit organizations, such as Christian schools, churches, and other mission-driven organizations. In his free time, he enjoys pursuing spiritual formation-related activities such as attending church, honoring the sabbath, reading the Scriptures, praying and spending consistent time in silence and solitude. He also enjoys playing and watching sports and spending quality time with loved ones and friends.

Dr. László (Laci) Demeter is dedicated to enhancing Christian schools and educators, preparing students for life with an eternal outlook. With a rich academic background including an MSc in Engineering, MA in Teaching EFL, MEd in Christian School Education, and EdS in Educational Leadership, Laci has been part of ACSI Europe since 1995 and became ACSI Europe Director in 2011. He frequently teaches at Christian education conferences worldwide. Laci, along with his wife Rita, is a parent to six children and grandparent to five.

Monique Duson is the President at the Center for Biblical Unity. She has a background in social service and children’s ministry. She has worked with a diverse array of under-served communities. She worked as a Missionary to South Africa for over four years, serving children and teachers impacted by drugs, violence, and trauma. She spent two decades advocating for Critical Race Theory (CRT), but through a series of events, began to clearly see the contradictions of CRT with the historic Christian worldview. Monique is now convinced that CRT is not the best way to achieve racial unity and actively speaks out against the use of CRT within the church.