Committee Members

Ken Bergwerff headshot

Ken Bergwerff

assistant professor of science education at Calvin College in Grand Rapids, Michigan

Ken Bergwerff holds a BA in elementary education from Calvin College and earned his master’s in teaching from Grand Valley State University. He taught in Redlands, California, from 1978 to 1983 and at Sylvan Christian Middle School in Grand Rapids, Michigan, from 1983 to 2001. He was an adjunct professor at Calvin College from 1999–2001 and joined the faculty in 2001. During his tenure there he has developed both an introductory biology course and an earth science course specifically for elementary education majors at Calvin, and for the past several years, has been active with providing in service training to middle school teachers in the US and Canada.

Ken has contributed to CSI science curriculum projects, verifying the accuracy of scientific information and providing support and assistance.


Carolyn Cooper headshot

Carolyn Cooper

Christian Schools International Board of Trustees member, Mira Loma, California

Carolyn Cooper graduated from Calvin College and received her master’s of science in faith-based leadership from California Baptist University. After four years teaching at Calvin Christian High School in Escondido, California, Carolyn became the director of curriculum at Ontario Christian Schools in Ontario, California. She worked with teachers and administrators to develop a comprehensive schoolwide curriculum, leading reviews in each preK-12 subject area. Carolyn currently lives in California with her husband and two sons.


Sue DeVries headshot

Sue DeVries

third grade teacher at Bellevue Christian School in Medina, Washington

Sue DeVries teaches at Bellevue Christian’s Three Points Elementary campus in Medina, Washington. She has taught primarily in the third grade for 29 years, 23 of which have been at Bellevue Christian. Sue has also taught workshops for colleagues about teaching science with an inquiry method. She is a graduate of Dordt College with a BA in elementary education and of the University of Washington with an MA in curriculum and instruction. Her master’s thesis posited what elements contribute to a confident and capable elementary science teacher. She loves seeing children discover God’s creation for themselves through science.


Marie Giresi headshot

Marie Giresi

science chairperson at Lake Worth Christian in Boynton Beach, Florida

Marie Giresi has been teaching high school science since 1997. She worked in the public school system in Palm Beach County, Florida, for several years before pursuing a career in Christian education; she has worked at Lake Worth Christian School in Boynton Beach, Florida, for the last seven years, and for the last five has also served as the Science Department chair. She has taught a variety of high school science courses but at present focuses primarily on the life sciences. Marie has an undergraduate degree from Florida Southern College in biology and chemistry and a master’s degree in education from Nova Southeastern University. Marie has a passion for teaching science and in teaching tomorrow’s Christian leaders how to think critically and how to “do” science.


Albert Kok headshot

Albert Kok

vice principal and middle school teacher at Beacon Christian School in St. Catharines, Ontario

Albert Kok is a Grade 8 homeroom teacher and vice-principal at Beacon Christian School. Since graduating from Redeemer University College in 1996 with a B.Sc. and B.Ed., he has taught in three schools as a science specialist. Albert has continued to experiment with how to teach science properly in each of these settings. He has written science curriculum for the Ontario Alliance of Christian Schools and has presented science teaching methodology at several conventions. He has also written science curriculum for Christian Schools International and is a science consultant for CSI’s And It Was Good. He continues to love teaching science, although he does not get to do it enough.


Susan Koppendrayer headshot

Susan Koppendrayer

middle school teacher at Calvin Christian School in Edina, Minnesota

Susan Koppendrayer teaches earth, life, and physical science at Calvin Christian Middle School in Edina, Minnesota. She has worked for nonprofit educational institutions for thirty years. She has a BA in education from Ohio Wesleyan University, a MA in education from Michigan State University, and has taken post graduate classes in science education from the University of Minnesota. Susan is a science consultant for Christian Schools International and a science educator ambassador for Honeywell Corporation. She also presents seminars at local, regional, and national science conferences. Susan encourages students (and teachers) to use the scientific process to learn more about God’s world.