Coleman Center


Robby Greene, President

greene rob
Robby Greene joined the staff of Lavon Drive in 1997 as a pastoral intern and soon became Children’s Pastor. Over the next seventeen years, he served in the children's and bus ministries, was promoted to the position of Assistant Pastor, and following the retirement of Dr. Gary Coleman as Senior Pastor in early 2014, Bro. Robby moved into the role of Interim Senior Pastor. In October 2014, Bro. Robby was elected by the congregation as Senior Pastor and was formally installed into that position on November 16, 2014. Prior to moving to Garland, Bro. Robby served as Children’s Pastor at Smyrna Baptist Church in Pensacola, Florida. He holds a Bachelor of Arts degree in Bible from Pensacola Christian College.

At the age of fourteen, Rev. Greene was saved during a revival at his home church in Charlotte, North Carolina. He also surrendered and made public his call into the Gospel ministry at this same revival. Bro. Robby has an unquestionable passion for ministering to people. He began 3D Kids Children’s Ministry in 1998 to develop devoted disciples among children of all ages, races, and backgrounds, helping them to continually mature into adolescents and, ultimately, adults that are prepared to face all of life’s situations with the mind of Christ. His extensive knowledge and love for children’s ministry has made him a much sought after speaker for children’s ministry conferences as well as a coach and mentor for children’s pastors across America.

Bro. Robby and his wife Heather have been married since 1998. Heather teaches preschool Sunday School, serves on the children’s ministry administrative staff, and teaches third grade at Garland Christian Academy. The Greenes have two children, Matt and Julia, who both attend Garland Christian Academy. In his spare time, Bro. Robby enjoys landscaping, model railroading, riding his motorcycle, and dining out with his family.

Cathey Ondrusek, Administrator


Cathey Ondrusek
Mrs. Cathey Ondrusek joined the Garland Christian Academy faculty in 1986. In 1987 she began teaching kindergarten until 1994 when she moved to the high school English department.  Upon her completion of her Master of Science degree in school counseling in 2003, she became the guidance counselor while she continued to teach English. She and her husband, Jim, are 1976 graduates from Garland Christian Academy; their sons are GCA graduates as well.  They are proud grandparents to five wonderful grandchildren.

Dr. Cole Sandlin, Elementary Principal & Assistant Administrator


Dr. Cole Sandlin
Dr. Cole Sandlin joined the GCA staff in May 2020.  Cole is an educator with over ten years of experience and has held various teaching and administrative roles throughout his career. Cole holds a B.S. in Education from Liberty University, an M.Ed. in Principal Leadership, and an Ed.D. in Organizational Leadership both from Abilene Christian University. He is excited to love and serve the staff, students, and families of G.C.A. and Lavon Drive. Cole is a graduate of G.C.A. and is where he met his wife, Cayla. They have been married for ten years and have two sons, Graham and Logan. In his free time, Cole enjoys spending time with his family, reading, writing, and watching basketball.

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