Faculty & Staff

Wayne Sit, Head of School since 2010, fell in love with teaching during his junior year at Harvard. During his nearly 30 years in education, he has been a middle school teacher at Buckingham Browne & Nichols School in Cambridge, MA, as well as the academic dean and director of technology at Boston Trinity Academy in Boston. Wayne loves the AACS community and its desire to continue being an excellent school for Christ in the greater Ann Arbor area. He is particularly passionate about the school’s expansion into high school grades to have a greater impact for God in the community as a full PK-Grade 12 Christian school. He and his wife have five children, three who currently attend AACS (and two at Calvin University) and are members of Knox Presbyterian Church.

Involved in education for over 30 years including public school teaching, private school teaching, reading intervention, and university level teaching, Renée joined the staff of AACS as the fourth grade teacher in 2009. Renée is now the Principal of our Main Campus, and our Curriculum Director, overseeing the school’s curricular offerings and academic programs. She and her husband are members of St. John the Baptist Catholic Church and have four children.

Born in Utah and raised in Ohio, Brett came to Ann Arbor to earn his undergraduate degree at the University of Michigan, where he also met his wife, Meghan. After a few years living in Seattle, the Kilgores returned to Michigan for Brett’s graduate work. Prior to AACS, Brett taught Economics, Geometry, and Forum at Community High School in Ann Arbor, where he also served as a department chair. Brett, Meghan, and their two children are members of Knox Presbyterian Church. They love to spend time outdoors and try all kinds of delicious cuisine!

Cheri Lubbers has been a part of the AACS community since its organization back in 1986. In the school’s early years, she was involved in a variety of volunteer positions, inside and outside of the classroom. One of her favorite things to do was to listen from the hallway as each class began with morning devotion time. She was hired to staff the main office in January 2003, the year the school moved to the current building. Cheri and her husband Mark are the parents of three adult daughters, all of whom graduated from AACS. She and her husband are members of Ann Arbor Christian Reformed Church.

Nathalia was born and raised in Bayamon, Puerto Rico. She brings 20+ years of experience from working at public and private schools to working at city planning and commercial real estate. For the past 10 years her main focus has been finance and accounting, helping companies manage their assets, finances and accounting to grow and build successful organizations. Nathalia and her husband have a blended family with five children. They are involved in their church group, and have given themselves to live a life for Christ and the Church.

Manuela is so thankful to be joining AACS! She moved back to Michigan (where she is originally from) 2 years ago after living overseas for more than 25 years. She speaks 4 languages: English, Swiss, German, and Arabic. She and her husband have 4 amazing children. Manuela loves to play the piano, sing, and lead worship. Her passion is to each children music and is looking forward to seeing all that God has planned for this year!

Bryan brings his love of physical health and athletics to AACS. He attended Dordt College in Iowa, where he played baseball for four years. At Dordt, he earned his B.A. in Elementary Education with a minor in Physical Education, along with certification in middle school mathematics and social studies. Over the past eight years, he has coached football, basketball, cross country, baseball, and softball. He loves watching students use their God-given athletic gifts and developing them over the span of their school careers. Bryan and his wife attend Ann Arbor Christian Reformed Church and live in Pinckney.

Ty has been a proponent of AACS Athletics ever since his son attended the school. He has coached baseball and flag football at AACS for the last four years. Ty graduated from Eastern Michigan University where he was mentored by some of the finest coaches in the history of high school and college athletics. He coached high school football, women’s fastpitch softball, and baseball for over 15 years. His role at AACS is assisting the Athletic Director in overseeing AACS Athletics as they mature under MHSAA rules and regulations. He is grateful for the prayers and support of his wife, Renee, and his church family at Ypsilanti Free Methodist Church.

Mike is a new addition to the AACS community, fulfilling the role of School Safety Officer. Previously, he worked in the law enforcement field for almost 35 years and recently retired from a local police department where he served in a variety of positions. He and his wife are members of a church in Canton and they have 2 children. Mike is a member of the Knights of Columbus and serves as an adult leader in the Boy Scouts of America.

Jennifer became the first AACS Preschool teacher in 2009 and has seen the program grow over the years. Previously, she taught preschool for seven years at Sonshine Nursery School, a cooperative preschool in Ann Arbor. Jennifer enjoys the wonder that comes with teaching young children and watching their excitement as they learn about the world that God created. Residing in Dexter, Jennifer and her husband attend Ann Arbor Christian Reformed Church. Her two children are both graduates of AACS.

Dawn Geldermans was born and raised in Grand Rapids where she went to Christian schools and attended Calvin College. She has a heart for Christian education and has been involved with AACS since it was founded. She has a passion for working with children, seeing their creativity, and zest for life, and watching them develop into the person God created them to be. She served in numerous roles during the years that her children attended AACS – helping in the classroom and library, various committees, and preparing and serving lunch. Dawn and her husband Arnie attend the Ann Arbor Christian Reform church and have four adult children, all of whom are AACS alumni.

Arpi was raised and studied in Lebanon and has almost 10 years of experience as a preschool teacher. In Lebanon, she taught ESL to Arabic and French-speaking students at Jesus and Mary School. Arpi and her family moved to Michigan in 2020. Her oldest daughter Lori will be studying at Wayne State University, while Leela will be in 10th grade, and Jacob will be at AACS as a preschooler. She believes in the importance of providing children an excellent education, as well as a strong Christian foundation.

After growing up in a Christian school, Christina knew she wanted to be involved in Christian education as an adult. After graduating from Cedarville University, she moved to Michigan when she married her husband, Chad. When it came time to find a school for their two children, they fell in love with AACS after the initial tour and knew it would be a perfect fit. Christina has spent many years coaching young children and is now taking her love of teaching into the classroom. When she is not spending time at AACS she enjoys leading women’s ministries at 2|42 Community Church or following her passion for sports!

Keri Louwerse has 10+ years of teaching experience in international and Christian schools. She has taught in Michigan, Florida, and the Cayman Islands. She is active in children’s ministry at her church, teaching Sunday School, and leading a ministry for children experiencing divorce. Keri is excited to be teaching at a school where she can share her passion for learning and for Christ. Keri and her husband live in Webster Township with their three children. They are members of Huron River Methodist Church.

With 14 years of teaching experience in lower elementary classrooms at public and Christian schools in Michigan and Indiana, Mary is a seasoned teacher. A member of the Ann Arbor Christian Reformed Church, she is known by many staff members and families who speak highly about her love of children and her faith in Christ. In the past, she has also served as her church’s children’s ministry director, youth director, church camp counselor, VBS director, Sunday school teacher, and church nursery caregiver. She is passionate about faith formation in the lives of children.

During Laura’s early years of college, she volunteered at Military Ave Church in Detroit in their homework program for struggling students. That is where she decided to become a teacher. With over a decade of experience in the classroom, including public and private schools, and her time at Wayne State University, she brings experience that benefits both students and stuff at AACS. Laura has been a parent at AACS since 2014. She, along with her husband and four children, attend Antioch Community Church.

Stacy is thrilled to be joining the AACS family. She loves reading and seeing children become avid readers. Stacy taught for several years in a public school before taking time off to be home with her children. Recently, she taught at a Christian school and loves being able to share God’s word with her students. Stacy and her husband live in Chelsea and have three children. They are members of Immanuel Bible Church. She feels it a great privilege to serve at AACS and be surrounded by a community who seeks to know and love Christ deeply.

Michelle feels that teaching is her specific call from God. She cares deeply about helping children grow deep in their walk with the Lord as they learn about His created world. Previously, Michelle taught at Washtenaw Christian Academy and in other private Christian and public schools. Michelle grew up in Idaho and has taught in Washington and Oregon. She and her family moved to Michigan in 2005. Her husband, Philip, is the pastor at Canton Calvary Assembly of God and their son, Austin, attends North Point Bible College in Grand Rapids.

Timothy fell in love with teaching between semesters in his first year of college when he worked with 2nd graders in a Christian school in downtown Chicago. Now with over two decades of teaching experience, mainly in upper elementary and middle school at Christian schools, Timothy and his wife came to AACS from Illinois. Timothy’s Master’s thesis topic was on the transition from fifth grade to sixth grade in small private schools. Timothy’s faith background is in the Christian Reformed Church, but he most recently attended a Lutheran church.

Julie has tutored in mathematics at all levels for 7 years, and served as a substitute teacher in Dexter Community Schools for the past 4 years, where most recently she was a premier substitute for third and fourth grade. In addition, she has worked as a curriculum writer for a special education curriculum, creating several units of Algebra II lessons and lesson plans. Julie has always had a passion for math education and is excited to pass on her excitement for math to the fourth and fifth graders at AACS. Julie and her family live attend Grace Bible Church, where their family serves in children’s ministry.

Boni is so excited to be teaching at AACS! Previously, she taught for 8 years mainly in 4th and 5th grade but is thrilled to make the jump to middle school. Working at AACS is the perfect fit for Boni, allowing her the opportunity to align her professional life to her spiritual life, and grow spiritually, professionally, and personally with all the staff and students. Boni lives in Ann Arbor with her husband and son and attends New Hope Church of Michigan in Novi. 

After graduating from EMU, Jennifer taught math in Wayne-Westland Community Schools for 4.5 years until starting a family, which grew to include 5 children. When they were all in school, she returned to teaching at St. Paul Ann Arbor where her children attended. She also worked as a tutor at Mathnasium. Jennifer loves to help students make connections with math. Her free time is spent watching her children’s sports, reading, and spending time with family. Jennifer and her family are members of St. Paul Lutheran Church Ann Arbor.

Julie fell in love with teaching during her senior year of college. During her student teaching experience, she realized that her love for literature and writing, and her love for teenagers, combined perfectly for a career in teaching. Her desire for all students is that they develop a love for reading, and more importantly, that they grow in their love and knowledge of God. Julie, her husband, and her three young-adult children live in Ypsilanti and attend 2|42 Community Church.

Mary first joined the AACS family as a parent when her oldest child entered 5th grade. Mary’s experience as an educator spans 3 decades, most recently teaching high school mathematics at Washtenaw Technical Middle College and college-level math and biology at Washtenaw Community College. She has also traveled with her husband to Burundi in East Africa to minister to a team of medical missionaries. Mary is especially excited to pursue her passion for teaching science and Bible from a Christian perspective at AACS. Mary attends Grace Bible Church.

Carolyn has strong roots in Ann Arbor, where she went to Pioneer High School and attended Knox Presbyterian Church. Prior to joining AACS, she taught Multimedia, Business Law, Government, and Economics in Grand Rapids Public Schools. Carolyn has a sincere love for teenagers and the energy they bring to the school day! In her free time, Carolyn enjoys hiking, being outside, and enjoying the Great Lakes. She currently attends Knox where she leads a high school small group.

Georgina was born and raised in Mexico City, Mexico. She and her family recently moved to the USA. She has always been involved in her church back home – serving as a teacher for Sunday classes, going on missionary trips, and being a counselor for the youth group along with her husband. Now, in Michigan, she and her family are serving in Red Tree, a church that had its first official service at the beginning of September, 2023. Georgina taught college students at the hospital she worked at in Mexico, and she also prepared the curriculum and materials for her son’s education program. She strongly believes that we are one in Christ and have been called to serve Him and His Church.

Esther was born and raised in Beijing, China, and has now lived in Michigan for 9 years. Prior to joining AACS High School, Esther worked on user interface design for YouTube, Apple CarPlay, and Android Auto and worked at FOX News as a graphic designer. She also has experience as a teaching assistant for college-level Chinese classes at Calvin University. When she’s not teaching, Esther enjoys playing golf and creating oil paintings. Esther and her husband are members of the Ann Arbor Chinese Christian Church.

Bryan brings his love of physical health and athletics to AACS. He attended Dordt College in Iowa, where he played baseball for four years. At Dordt, he earned his B.A. in Elementary Education with a minor in Physical Education, along with certification in middle school mathematics and social studies. Over the past eight years, he has coached football, basketball, cross country, baseball, and softball. He loves watching students use their God-given athletic gifts and developing them over the span of their school careers. Bryan and his wife attend Ann Arbor Christian Reformed Church and live in Pinckney.

Becca attended Eastern Michigan University and graduated with a degree in Fine Arts with Teaching Certification. Upon graduation, she taught art at a K-8 school in Ypsilanti for 8 years. She took a break from teaching when her two boys were born. Once her children started attending AACS, she quickly fell in love with the community and soon joined the staff as an academic support team member. She enjoys serving the school in a variety of ways. Becca, her husband, and two sons attend Calvary Bible Church and live in Whitmore Lake.

Antoinette has aspired to be a teacher since 1st grade. She has 10+ years of teaching experience, ranging from pre-k through 8th grade in both public and charter schools. She is very excited to teach in a Christ-centered environment. Since each child is uniquely made by God, she utilizes students’ strengths to motivate students to create individualized plans for them to reach their full potential. She, along with her husband and two children, attend University Lutheran Chapel in Ann Arbor.

After graduating from Ohio State Lisa moved to Ann Arbor (“enemy territory” as she called it) to be with her high school sweetheart and eventual husband, Shawn. Now they have two boys who attend AACS and are excited to see how God will grow the school in future years. When her youngest came to AACS she felt a calling to start working again part-time and was excited when an opportunity came to be a part of our academic support team almost 3 years ago! Lisa enjoys planning ALL the things, organizing, and traveling. Lisa’s family attends Huron River Methodist Church.

Arpi was raised and studied in Lebanon and has almost 10 years of experience as a preschool teacher. In Lebanon, she taught ESL to Arabic and French-speaking students at Jesus and Mary School. Arpi and her family moved to Michigan in 2020. Her oldest daughter Lori will be studying at Wayne State University, while Leela will be in 10th grade, and Jacob will be at AACS as a preschooler. She believes in the importance of providing children an excellent education, as well as a strong Christian foundation.

Becca attended Eastern Michigan University and graduated with a degree in Fine Arts with Teaching Certification. Upon graduation, she taught art at a K-8 school in Ypsilanti for 8 years. She took a break from teaching when her two boys were born. Once her children started attending AACS, she quickly fell in love with the community and soon joined the staff as an academic support team member. She enjoys serving the school in a variety of ways. Becca, her husband, and two sons attend Calvary Bible Church and live in Whitmore Lake.

Carolyn has strong roots in Ann Arbor, where she went to Pioneer High School and attended Knox Presbyterian Church. Prior to joining AACS, she taught Multimedia, Business Law, Government, and Economics in Grand Rapids Public Schools. With a sincere love for high schoolers and the energy they bring, Carolyn also enjoys the in-depth content she is able to teach at the high school level. In her free time, Carolyn enjoys hiking, being outside, and enjoying the Great Lakes. She currently attends Knox where she leads a high school small group.

Tony has been dedicated to Christian education since 2006, holding roles in parish ministry and teaching theology at a Christian high school in Arvada, CO. In addition to his educational work, he applies his expertise in graphic design to assist companies in developing and leveraging their brands effectively. He is a married father of four, enjoys playing and listening to music, is an avid reader, and has a borderline obsession with Red Wings hockey. He attends University Lutheran Chapel in Ann Arbor, where he helps with worship.

Rebecca’s heart has always been in Ann Arbor. After graduating from high school in Oklahoma, she returned for her undergraduate studies at U of M. Her prior teaching experience includes time at Lincoln High School, various home school cooperatives, the Writing Center at U of M Flint, and running a private writing tutoring business. She has worked with teens in several performance ministries as well, leading drama and worship dance groups. Rebecca and her husband, Patrick, enjoy spending time with their 4 adult children and 2 (soon to be 3) grandchildren. She and her husband attend Community Bible Church in Brighton.

Tami has been teaching math in some capacity since she graduated from Calvin College. She first taught at Novi Christian Academy. Then she ran a tutoring business. Tami first came to AACS as a parent. She fell in love with the school and served on the board, substitute taught, and taught a math elective. For six years she taught math in the middle school and in the fall of 2023 moved to teach at the upper campus. She loves the challenge of making math fun and interesting. She loves to see a student grow and learn to succeed math. Tami and her husband have two sons and attend Knox Presbyterian Church.

Erin is a recent transplant to Ann Arbor and has come to appreciate the community found here. In her previous home in North Carolina, she worked as a research and development scientist in Raleigh’s Research Triangle Park, designing LED components that you might find in your home. Erin delights in all of God’s creation: plant, animal, mineral, and everything that composes His great tapestry down to the smallest molecule. She hopes to encourage and grow this love in her students as well. Erin is currently a member at Knox Presbyterian Church with her husband and two sons.

Georgina was born and raised in Mexico City, Mexico. She and her family recently moved to the USA. She has always been involved in her church back home – serving as a teacher for Sunday classes, going on missionary trips, and being a counselor for the youth group along with her husband. Now, in Michigan, she and her family are serving in Red Tree, a church that had its first official service at the beginning of September, 2023. Georgina taught college students at the hospital she worked at in Mexico, and she also prepared the curriculum and materials for her son’s education program. She strongly believes that we are one in Christ and have been called to serve Him and His Church.

With over 25 years of experience guiding high school students and their families through the college selection and admission process, John Boshoven is an exceptional college counselor. John recently retired from Ann Arbor Public Schools in that capacity, but still stays involved with the district in other roles while also maintaining his personal business of providing private consultation to families on the college admission process. He also has experience as a social worker. John attends Grace Ann Arbor North Church, which is also the location of our high school campus.