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.

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.

Kerry has a desire to assist staff with learning and using classroom technology. She feels that new and changing technology should not be a source of frustration or hold educators back. She also brings her passion for leading students through learning technology and managing its ever expanding role in our culture. Kerry has three children attending AACS and has been involved in many volunteer roles over the years. She and her family are members of Ann Arbor Christian Reformed Church where she is also a GEMS leader.

Mike attended Washtenaw Community College for a time and then changed directions and was hired as an Instructors Assistant in their auto body shop. He accepted Christ on January 10, 2011, at 22 years old at Camp Barakel and attends Calvary Bible Church in Ypsilanti. He teaches Sunday school and is an AWANA leader. He loves to serve, and this position has opened a great opportunity to serve the staff, kids, and families every day. He lives in Dexter with his two sons, and if not at work he is with them out in the woods on their mountain bikes. Mike is also an amateur blacksmith.

Mike serves 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 two children.

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.

Michelle Whitefield is a graduate of Madonna University, where she earned her degrees in Early Childhood and Elementary Education with a ZS endorsement in 2015. While teaching in Birmingham Public Schools and pursuing her graduate degree, she became a mom and made the decision to stay home to raise her daughter. She continued her coursework and graduated with her Master’s Degree in Literacy Education in January 2022, just a few months before welcoming her second daughter. Michelle and her family attend Oak Pointe Church (Novi Campus). 

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.

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.

Starting in 2001, Kellie was a teacher at AACS for 9 years and then stepped away to be home with her growing family. Kellie remained closely connected to AACS in many ways, including substitute teaching and serving on the school board for 5 years. She has also enjoyed her role as an AACS parent as her own children have embarked on their educational journeys here! She was thrilled to rejoin the staff in 2020. Kellie resides in Whitmore Lake with her husband Paul and their two sons. They are members of Ann Arbor Christian Reformed Church.

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.

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.

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.

Karen has been a part of Ann Arbor Christian for over 25 years, as a parent, substitute teacher, and kindergarten teacher. Though she had to leave the school community when her husband accepted a job placement overseas, her love for AACS and her commitment to Christian education remained strong. Karen began serving on the school’s Board of Directors while living overseas. Returning from the overseas assignment, Karen returned to her home in Dexter, her home church at Ann Arbor Christian Reformed Church, and also joins the middle school team as a support to teachers and students.

This is Shannon’s first year at AACS as a paraprofessional. She has worked with children in before-and after-school care programs, summer camps, and also helped start and run a Christian community center. Shannon has a passion for mentoring teen girls, deepened by her involvement in youth ministry with her husband, and she has launched her own ministry guiding young women to ground their identity in Christ. Shannon and her husband, Tyler, have three children—one in college and two currently attending St. Paul Lutheran Church and School, where Tyler serves as youth director. In her spare time, she enjoys spending time with family and friends, running, exploring God’s creation, and cheering for the Green Bay Packers. Go Pack!

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.

Emily is so thankful to be joining the AACS community! She lives in Canton, where she taught private music lessons to young children for 3 years during college. Her love of music has made its way into almost every area of life: hobbies, friendships, education, and now occupation. She believes that learning music is just like learning any other language: you learn the most by experiencing it in real time. Emily grew up at, and still attends, Harvest Bible Church in Westland. She serves on the worship team as a musician and songwriter, and directs the adult choir. Emily completed her student teaching in public schools nearby and is thrilled to finally be involved in Christian education! 

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.

Alicia is deeply grateful that God led her back to AACS. Three of her children previously attended AACS many years ago. Before becoming a learning specialist, she taught Spanish, Middle School Math, and Third Grade. She has a passion for helping students thrive despite academic challenges. She has seven children and seven grandchildren and loves spending time with them all. Alicia lives with her husband and 3 energetic dogs in Howell, where they attend Agape City Church.

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.

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.

Karen has been a part of Ann Arbor Christian for over 25 years, as a parent, substitute teacher, and kindergarten teacher. Though she had to leave the school community when her husband accepted a job placement overseas, her love for AACS and her commitment to Christian education remained strong. Karen began serving on the school’s Board of Directors while living overseas. Returning from the overseas assignment, Karen returned to her home in Dexter, her home church at Ann Arbor Christian Reformed Church, and also joins the middle school team as a support to teachers and students.

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.

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.

Garrett moved his family to Michigan to join the new AACS High School to teach science and math. He was born and raised in Southern California, educated in the Northwest, and taught high school math and science for 18 years at a small private school serving Christian families located in Southern California. Garrett and his wife Rachel received the Lord’s speaking to go, and they responded to the Lord’s calling to move to AACS with their three children in faith. They are in fellowship with the Local Church in Ann Arbor, and they marvel, witnessing that the Lord is able to do more than they could plan, ask, or think.

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.

Rachel was born and raised in Ann Arbor and is excited to join the AACS community. She has been a coach for 10 years in the Strength and Conditioning field, working with a broad array of athletes, including many high schoolers. She went to Concordia University in Ann Arbor where she majored in Biology with minors in Chemistry and Exercise Science. When she is not teaching, Rachel enjoys cooking and running or any outdoor activity. She attends Grace North Church (site of the upper campus) and is excited to see what God is doing in and through the AACS community.

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.

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.