OCS Senior Administration

Bob Yttredahl
Head of School & Secondary Principal

Bob Yttredahl leads OCS as Head of School & Secondary Principal. The Middle School Coordinator and the Upper School Coordinator function under his direction. He is a beloved figure in the upstairs hallway and has made it a personal mission to meet students where they are and help them strive to reach their full potential.

In his 24 years in education, Mr. Yttredahl has served in many roles, including Head of Upper School, Dean of Faculty, Boys’ Basketball Head Coach, and athletic director. He grew up in Iowa and received a B.S. in English and Secondary Education from Wayne State College. He is a proud lifelong Cyclone. He attended Iowa State and worked at their summer basketball camps. After moving to Dallas, he earned his master’s in Educational Leadership from SMU.

Mr. Yttredahl believes it is important not to simply be a fan of Christianity but to be an active member of the church to grow in relationship with Christ. This is how a Christian grows in faith and knowledge of Jesus. “For this very reason, make every effort to supplement your faith with virtue, and virtue with knowledge, and knowledge with self-control, and self-control with steadfastness, and steadfastness with godliness, and godliness with brotherly affection, and brotherly affection with love. For if these qualities are yours and are increasing, they keep you from being ineffective or unfruitful in the knowledge of our Lord Jesus Christ. For whoever lacks these qualities is so nearsighted that he is blind, having forgotten that he was cleansed from his former sins.” (2 Peter 1:5–9 ESV)

Mr. Yttredahl has a son, RJ, and a daughter, Becca. He enjoys reading, working outside, and watching Iowa State. He spends his free time attending his son’s basketball games and daughter’s volleyball games. He is a member of Ovilla Road Baptist Church.

Sherry Fragale
Lower School Principal

Sherry Fragale oversees and cares for the faculty and staff of the OCS Early Education and Lower School. This includes the EE 2-Day program, PreK3 and PreK4, and Kindergarten through Grade 5. She makes it a daily mission to ensure teachers' needs are met, students are thriving, and parents have the opportunity to partner with the school. She is passionate about building relationships and will strive to create a caring and nurturing environment where students will become life-long learners and disciples of Christ.

Mrs. Fragale has been in education for over 30 years. She received both her B.S. and M.Ed. from the University of North Texas and has spent 30 years in elementary education. Her roles in the public school system have included: teacher, instructional specialist, summer school principal, and assistant principal. Throughout her career in education she has held fast to Joshua 1:9: “Have I not commanded you? Be strong and courageous. Do not be afraid; do not be discouraged, for the LORD your God will be with you wherever you go.”

Mrs. Fragale enjoys traveling and spending time with her three grown kids and her husband, Mark. She loves to lead worship and music is a big part of her life. She is a member of Ovilla Road Baptist Church and is extremely grateful the Lord led her to join the OCS family.