Who We Are

Leadership Team


Joel Penner

Joel Penner has been serving as the head coach of the Dordt football program since 2016. During Penner’s time at Dordt, he has coached 10 first-team all-GPAC players, 14 players named NAIA Daktronics Scholar-Athletes, and six players who earned CoSIDA Academic All-District First-Team honors, and a player who has been named a CoSIDA Academic All-American three times. Prior to his time at Dordt, Penner spent 19 years coaching college football with stops at Malone (Ohio), Northwestern College (Iowa), Trinity International (Illinois), Greenville (Illinois), and Pacific Lutheran (Washington).

Penner’s mission is to honor God in the way he stewards the program, building men and leading players to fight to compete fiercely out of a secure identity in Christ.


Bill Harmsen

Bill Harmsen currently serves as the Head Women’s Basketball Coach and Assistant Sports Information Director at Dordt University. Harmsen’s first two years with the Dordt program have established record-setting performances. Harmsen is now entering his third year serving with the women’s program. Prior to his time at Dordt, Harmsen served over 20 years in Christian education. Most recently he served 17 years as teacher, coach, and assistant principal at Western Christian High School (Hull, Iowa) and was a teacher, coach, and athletic director at Dakota Christian High School (Corsica, South Dakota) before that. He also served as assistant men’s basketball coach at University of Sioux Falls (South Dakota) and as the head girls’ basketball coach at Sioux Falls Christian.

Harmsen’s goal is to use the relationships and opportunities that athletics provides to equip his athletes with spiritual, social, and emotional skills to establish lives built on Jesus Christ.


Lindsey Van Schepen 

Lindsey has coaching experience, from elementary school volleyball to high school varsity volleyball, at Timothy Christian Schools, Orange City Christian School, and Unity Christian (IA). She currently serves as the varsity assistant coach at Unity Christian High School. She is also involved in the leadership of the AAU (club) volleyball program in NW Iowa. Lindsey is passionate about using athletics to further the mission of our schools as we train student athletes in all areas of life.

Athletic Directors


Dan Branderhorst

Pella Christian

Dan Branderhorst is the Activities Director at Pella Christian High School. He has worked in education since 2011 and has served as the AD since 2016. He has experience coaching boys golf and all levels of high school basketball. Dan is passionate about facilitating Christ-centered athletic programs of excellence that empower student-athletes to grow spiritually, mentally, emotionally and athletically. He and his wife, Amy, have been married since 2003 and have two children, Deacon and Lexi. Dan loves coaching basketball at PC. He also enjoys golf, pickleball and the Iowa State Cyclones.


Brandon Haan

Central Minnesota Christian

Brandon currently serves at K-12 Principal and Athletic Director at Central Minnesota Christian School in Prinsburg, MN. Brandon has coached basketball, baseball, football, and track & field throughout his career as an educator. Brandon's wife, Jill, coaches varsity volleyball. They have three daughters who attend CMCS. Brandon has found that Coaching for Transformation is such a valuable tool for pulling everything (players, coaches, ADs, programs) in the same direction!


Shane Hansen

Sheboygan Christian

Shane Hansen has served as a youth, high school and collegiate coach, as well as a high school athletic director for eight years (currently serving at Sheboygan Christian School in Wisconsin). SCS is currently working with their administrators, coaches, student-athletes and parents as they engage in a collaborative process of developing/refining their Coaching for Transformation gameplan, with the intention to implement the CfT initiatives with the 2021-22 school year.


Darin Keizer

Southwest Christian

Darin Keizer serves as the Athletic Director at Southwest Christian High School in Chaska, Minnesota. During his time at Southwest he has also been the Head Varsity Coach and strength and conditioning coach. Elsewhere, Darin has served as an athletic director, head boys basketball coach, and a grad assistant basketball coach. He holds a master's degree in K-12th administration and a certified masters in athletic administration. CfT has helped us think critically about our daily practices and how we teach, train, and share transformational habits with our coaches and athletes.


Travis Kooima

Western Christian

Travis Kooima, known around school as ‘Coach K’, became the athletic director in 2018 but has served student-athletes since 2006. He has been a part of successful girls basketball programs and is the head football coach, leading teams to 4 district titles, 1 state runner-up, and a state championship.

Prior to joining Western Christian, Travis earned his BA from Northwestern College in Orange City, IA, and later went on to earn his M.Ed. in Sports Leadership from Dordt University in Sioux Center, IA. Travis’s hope is to unify coaches and programs, and give them a common language as they work to connect all things with the overall mission of Western Christain High School. Travis wakes up every day with a passion to lead young people to understand their purpose on earth and to glorify God in everything they do.


Crystal Lombardi

Trinity Christian

Crystal Lombardi currently serves as the Athletic Director and Head coach for both Varsity softball and volleyball at Trinity Christian in Monterey, California. She has coached since 2004 and is a former collegiate athlete. Lombardi has served at Trinity Christian since 2012 as a coach, teacher, assistant AD. CFT is an excellent tool to help coaching staff and student athletes work toward their God given purpose. It provides accountability, consistency, and biblical resources to ensure all are working towards the same goal. 


Jake Pettengill

Sioux Falls Christian

Jake Pettengill serves as the Dean of Students at Sioux Falls Christian (SFC). Jake has 11 years of football coaching experience and seven as the head coach at SFC, he also spent three years at Flandreau Public Schools and one at Sioux Falls School District. In his coaching experience he was a part of three state championship teams. Jake is no longer coaching but works with the athletic department to help support intentional coaching. As a coach he wanted his program to be Christ Centered and that is what his desire is for the programs he partners with.


Joseph Walker

Grace Community

Joseph Walker has worked as the Athletic Director at Grace Community School in Tyler, Texas, since 2014. Prior to coming to Grace, he worked as the Assistant Athletic Director at Jackson Christian School (Jackson, TN) from 2010 to 2014, and as the Athletic Director at Brentwood Christian School (Austin, TX) from 2000 to 2010. Joseph received his bachelor's degree in Social Studies and master's degree in Education Administration from Harding University, and his Educational Specialist and Doctor of Education degrees in Educational Leadership from Union University. Joseph has been using athletics to disciple students for many years, and his initial efforts with his Grace coaches on the Coaching for Transformation side have been inspiring and productive to all involved. He is looking forward to implementing the program in the entire Grace athletic department for the 2021-22 school year. Joseph and his wife, Tasha, have two children, Darby and Rick. The Walkers are members of Grace Community Church and enjoy home remodeling projects, movie nights, and time at the beach together.


Gregg Zonnefeld

Central Wisconsin Christian

Gregg Zonnefeld serves as the Director of Advancement and Athletic Director at Central Wisconsin Christian in Waupun. He and his wife Kristi have served at CWC since graduating from Dordt University in 1992. Gregg’s administrative experience includes more than 25 years in both athletic and educational administrative team work, with extensive involvement at the conference and statewide levels. Coach Z led the Crusader boys’ soccer program for 24 years, and is among the top ten in coaching victories in Wisconsin history, and also has coached track and field and girls’ basketball. Integrating faith into sport and life has been a lifelong passion, and the CfT program serves as an outstanding way to intentionally align coaches, kids, and parents in a Christ-centered approach of connecting the body, mind, and soul for His glory.

Member Schools

Avail Academy

Chattanooga Christian

Eden Christian

Intermountain Christian

Lansing Christian

Mount Vernon Christian

Ripon Christian

Sioux Falls Christian

St. Cloud Christian

Southwest Minnesota Christian

Wheaton Academy