Secondary Staff


Mr. Bob DeRuiter
Secondary Principal

Education B.A., Business Education: Trinity Christian College Prior to coming to ECA in 2000, Mr. DeRuiter taught business classes at Chicago Christian High School.  Mr. DeRuiter serves as ECA Secondary Principal, Academic Advisor, Modern History/Literature 9 teacher and ECA Baseball Coach. “My greatest joy is witnessing God’s handiwork in each student and watching them mature in their attitudes and beliefs.”

Rev. Matt Holst
Director of Spiritual Life and Bible Faculty

Education B.A., Sec. Ed.: Washington Baptist College M.A., Hist. Theology: Westminster Theological Seminary M.Div.: New Geneva Theological Seminary Rev. Holst serves as Bible Instructor and Director of Spiritual Life at ECA, as well as Pastor at High Plains Fellowship (PCA) in Falcon, Colorado.  “My goal for all of my students is that they will leave ECA with a true understanding of what it means to be saved by grace apart from works and will in turn live a life of gratitude for what God has done for them.”

Mrs. Sandra LaCerte
Librarian/Media Specialist & Assistant Dean for Female Students

Education B.A., Political Science: Colorado State University M.A., Educational Media: University of Northern Colorado Mrs. LaCerte began serving as Librarian-Media Specialist at ECA in 1991 and currently serves in that capacity at the Secondary campus.  “I believe biblically the main premise of Christian education begins with the foundation that all true knowledge and wisdom comes from God and that it is imperative to use God’s standard, His Word, as the measure of truth.  The library media program endeavors to assist students and teachers in developing information skills using accurate and authoritative research resources.”

Mrs. Kerry Singleton
Assistant Principal - Junior High

Education B.A., Mathematics and English: Covenant College Prior to ECA, Mrs. Singleton taught at a Christian school in Atlanta, tutored math and SAT preparation for 15 years, and taught math at a homeschool co-op.  Mrs. Singleton serves as Assistant Principal-Junior High in addition to teaching Pre-Algebra, Algebra I, Logic 8, and Medieval History/Literature/Bible 8.  “I love sharing my passion for God and my subjects with my students, and it is a joy to point them to their true identity in Christ and to the one, true God, the source of all truth.  I start my students off with Colossians 1:15-17, because it points directly to the fact that all things have been created by God and for His glory, and that is the beginning, middle, and end for all subjects.”

Mr. Don Steiner
Vice Principal and Athletic Director

Education B.S. Kinesiology: California Polytechnic State University, San Luis Obispo M.A., Sports Administration: University of Northern Colorado Certified Athletic Administrator (CAA):  National Interscholastic Athletic Administrators Association Before joining ECA in 2004, Mr. Steiner worked at Lockheed Martin in the Learning & Development Department and coached football at CSCS.  Mr. Steiner currently serves as ECA Vice Principal, Athletic Director, and Physical Education Instructor. He has been the Black Forest League President and a member of the Colorado High School Activities Association (CHSAA) since 2009, served on numerous committees, and has recently been nominated for the CHSAA Board of Directors.  “I desire that our students see the big picture and understand that their actions have consequences, both good and bad; and that if they choose to be godly in those actions, then those consequences will be blessed in our current life as well as our life to come.”


Mrs. Traci Aragon
Secondary Technology Instructor

Education B.A., Psychology: University of Colorado Mrs. Aragon teaches Junior High Computers, Computer/Advanced Computer Applications, Indesign/Photoshop, and Yearbook. “I look forward each year to teaching my students how enriched their lives can be by learning to use computers and how God has created all things, including the knowledge and desire for us to invent technology.”

Dr. Sondra Bell Israel
Junior High and High School Band Instructor

Education Doctorate, Performance-Trombone/Conducting-Winds: University of Cincinnati – College of Music. In addition to teaching Junior High Band and High School Band at ECA, Dr. Bell is an active freelance performer, educator/adjudicator, and director of the UCCS Concert Band, Pikes Peak Trombone Choir, and Colorado Trombone Festival.  “I am blessed that I teach in a Christian school and can speak freely of the Creator of all music while inspiring and encouraging students to excel in developing their God-given musical talents.”

Mrs. Marie Burley
French & Literature Instructor

Education BA, Ballet: University of Utah M.A., Production Management: University of Utah Prior to teaching French I and II, American Literature, British Literature, AP Language/Composition, and AP Literature/ Composition at ECA, Mrs. Burley taught at the University of Utah, substitute taught, and traveled the world.  “The goal of Christian education is to glorify God by equipping students with necessary skills within the framework of Christianity. It is my prayer that our ECA students will embark on a lifelong love of learning about God and His creation.”

Dr. Kenneth Dieter
AP/Honors Chemistry Instructor

Education B.S., Chemistry: USAFA M.S.: Michigan State University Ph.D.: The University of Texas at Austin M.Div.: New Geneva Theological Seminary Dr. Dieter spent most of his 20-year Air Force career teaching chemistry at the USAFA and the USMA-West Point and has joined the faculty of ECA to teach AP Chemistry.  “The Bible is the source of primary truth. All knowledge is ultimately rooted in the truth of the scriptures. It is liberating and a joy to be able to teach chemistry upon that bedrock.”

Mrs. Carrie Fox
Composition and Literature Instructor

Education B.S., English Education: Arkansas Tech University AP Language Training: University of Arkansas-Fayetteville and University of Arkansas-Little Rock. Mrs. Fox taught for 14 years in a private, Christian school and three years in Classical homeschooling in Little Rock, Arkansas, and currently teaches Composition and World Literature at ECA.  “I have a passion for Christian education taught with a Biblical worldview because ‘The fear of the Lord is the beginning of wisdom, and the knowledge of the Holy One is insight.’ Proverbs 9:10.”

Mr. Jeremiah Hamer
Secondary Mathematics Instructor

Education B.S., Secondary Education: Kansas State University. Mr. Hamer has taught Secondary Math for many years, and he teaches Algebra II, Geometry, Honors Pre-Calculus, and AP Calculus at ECA.  “I love teaching high school students because they love to dialogue, argue, and critique as well as build relationships.  One goal I have is to capitalize on this ability to dialogue and incorporate it into a classroom where students are comfortable discussing, asking questions, reasoning, and learning together.”

Mrs. Michelle Hamilton
Junior High and High School Science Instructor

Education B.S., Medical Technology: Adams State University, Penrose School of Medical Technology. Mrs. Hamilton teaches Earth Science 8 and Chemistry at ECA; and prior to joining ECA, she worked in health care for 25 years, 17 of which were in a hospital lab.  “My hope is that students will leave my classes capable of speaking intelligently to a lost and dying world, convincing them that we are not here by accident but are thoughtfully and orderly created by our wonderful Savior Jesus Christ.”

Mr. Brent Holtcamp
Secondary Art Instructor

Education B.A., K-12 Education: University of Southern Colorado Mr. Holtcamp has been involved in the ministry of ECA since 1978 and teaches Junior High Art, Art I, II, III, and Studio Art; and he is still excited to see that the potential for glorifying God through the students and ECA is limitless.  “I hope to open the students’ eyes to this great and exciting world by looking, seeing, and doing with a positive curiosity about the wonders God our Creator has set before us.”

Mrs. Leigh Jones
Junior High Mathematics, Literature, History, and Bible Instructor

Education B.A., Elementary Education: Calvin College. Mrs. Jones attended Christian school from Kindergarten through college and has taught in Christian schools in Grand Rapids, Michigan, and Fort Collins, CO, and she wholeheartedly values the importance of Christian education and the impact it can have on the children in our society.  After working in the ECA Pre-Kindergarten program, Mrs. Jones now teaches Language Arts 7, General Math, and Ancient History/Bible 7.  “I desire to be a teacher who can open up each child’s heart to learning and to loving the Lord so that they may continue to grow day by day.”

Mrs. Karen Leidecker
Secondary Science Instructor

Education B.A. summa cum laude, K-8 Education with a Psychology and Bible minor: Tennessee Temple University After teaching elementary through high school in several Christian schools in various states, Mrs. Leidecker joined the faculty at ECA in 1995 and teaches Life Science 7, Biology, Honors Anatomy & Physiology, and Business Math.  “It is a great joy to be able to minister Christ’s love to my students through the subjects of science and math.”

Mrs. Cristy Ross
Spanish Instructor

Education B.A. Theater: University of Colorado-Boulder. Mrs. Ross previously worked at our Elementary campus and has joined our Secondary faculty to teach Spanish I and II. “I had my life wonderfully changed by God in college, and He led me to Spain as a missionary. I am so thankful for the opportunity to teach my students the language God has used in my life, and I hope it will be a blessing to them as well!”

Mrs. Beth Saks
Junior High Latin Instructor

Education B.A., Elementary Education: University of South Carolina; Continuing Education: Multnomah Bible College. Mrs. Saks has invested over 30 years in the education and discipleship of our Covenant children.  Believing language is given to us alone in the creation to reflect God’s image, she is committed to teaching our students to steward this gift well.  She is privileged to introduce our students to Latin, a language which provides insight into the world of Jesus’s day, context for our own nation’s history, and perspective for the study of western civilization.  “I believe there are few means more beneficial to the training of young minds than the study of Latin; the resulting virtues of discipline and understanding are great gifts to be pursued. ‘…diliges Dominum Deum tuum…in tota mente tua.’ Matthew 22:37, Latin Vulgate [‘Thou shalt love the Lord thy God…with thy whole mind.’].”

Ms. Rebekah Saks
Junior High and High School Choir Instructor

Education B.A., Music: Belhaven University. Miss Saks, who has worked in various capacities with children, youth, and adult choirs since 2006 and given private piano lessons since 2007, currently serves as Vocal Music Instructor at ECA.   “As Victor Hugo put it so well: ‘Music expresses that which cannot be said with words and on which it is impossible to remain silent.’ I wish to help my students discover, explore, and refine this beautiful form of communication so that they may have a means of expressing the joy that God has placed in their hearts and become engaging worshippers, not only in Choir but in whatever they do.  ‘I will sing to the Lord, because He has dealt bountifully with me.’ Psalm 13:6.”

Mrs. Leslie Schwager
Secondary Rhetoric Instructor

Education B.A., Literature major, Speech minor: University of Texas of the Permian Basin Mrs. Schwager has 19 years of teaching experience in Classical Christian education, including Aristotle’s Rhetoric, Debate, Thesis Project, Advanced Composition, Worldviews of the Western World, Classical Writing & Poetry, and Traditional Logic. Mrs. Schwager has taught Rhetoric at ECA for nine years and numerous classes for Collegium Study Center as well.  “The wise in heart will be called understanding, and sweetness of speech increases persuasiveness.” Proverbs 16:21  “I desire to give our students the tools they need to write and speak persuasively for the glory of God.”

Ms. Sandra Vollbracht
Secondary History Instructor

Education B.A., History: Covenant College/University of Colorado Before coming to ECA in 1991, Ms. Vollbracht taught at and administered Covenant Christian School in Los Alamos, New Mexico; and she currently teaches World History, U.S. History, Civics, AP U.S. History, and Honors World Political Systems. “Scripture is the guide for all we study and necessary for understanding history and its importance. What a privilege it is to instruct young people in a biblical understanding of history. I believe God has put me here to do just that.”