Glenn Duncan

Executive Director and CEO

In his previous occupations, Mr. Duncan pioneered marketing and brand management success for a number of companies, including a four-year stint in Melbourne, Australia as the Director of Business Development for Linfox Distribution Group. After working closely with an influential person, he became inspired to enter the field of contemporary education, which eventually led him to Southlands. It is Mr. Duncan’s opus to raise up global leaders who will become agents of change in society.


Grant Schmitter



Sue Yoon

Elementary & Middle School Principal

Sue Yoon has a BA from Biola University in Education and Sociology and received her MA in Education and Curriculum/Instruction. She has been a part of Southlands Christian Schools for 28 years; at an administrative level for the past 11 years. Mrs. Yoon started at SCS as an elementary school teacher. While still teaching, Mrs. Yoon became the Elementary Vice-Principal and eventually moved on to become the Elementary and Middle School Principal. She currently serves as the Principal and Director of Education for Southlands Schools International. All her years of service show that Mrs. Yoon is passionate about learning and teaching. Her favorite quote comes from a respected educator by the name of Dr. Rita Pierson. She said, “every child deserves a champion, an adult who will never give up on them, who understands the power of connection, and insists that they become the best that they can possibly be.”


Maria Garcia

Assistant Principal of Counseling

Mary Sheriff

Director of Student Leadership

Jane Zhu

Director of Student Advancement