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Harmony Public Schools’ Board of Directors are all unpaid volunteers who come from varied backgrounds in academia, law, science, and mathematics, but share a common passion for education. The Board also solicits input and insight from various individuals and business community members in the Houston area.

Board nominations can be made by anyone, including existing Board members, Harmony school employees, parents of Harmony students, Harmony alumni, and the general public. The existing Board reviews the qualifications of nominees, seeking individuals who have expertise, experience, or leadership abilities that will contribute to maintaining a continued standard of excellence for Harmony Public Schools and its students. Once each year, the existing Board votes on nominations to replace members whose terms have expired, or who have left the Board for other reasons.

Leadership Biographies

Dr. Soner Tarim: Dr. Tarim serves as the Chief Executive Officer of Harmony Public Schools. Visit Dr. Soner Tarim's page for more information.

Dr. Oner Ulvi Celepcikay: Dr. Celepcikay serves as President of the Board of Directors.  He received his bachelor’s degree in Electrical Engineering from Istanbul University in Istanbul, Turkey, and his master’s and doctorate degrees in Computer Science from the University of Houston.

Dr. Celepcikay serves on the faculty at the University of Phoenix Computer Science Department and is a published researcher in several fields, including cluster analysis, multivariate statistical analysis, regional regression analysis, and spatial data mining. He worked at the University of Houston in the Educational Technology Outreach Department from 2000 to 2007, and is a member of the Institute of Electrical & Electronics Engineers, the world’s largest professional association dedicated to advancing technological innovation and excellence. Dr. Celepcikay sits on the Board of Directors of the Region 4 Education Service Center.

Mrs. Ellen MacDonald: Mrs. MacDonald serves as Vice President of the Board of Directors.

Mrs. MacDonald is the Executive Director/CEO of the Senior Guidance Directory.  It is a Caregiving Handbook, available free to elders and their caregivers and it provides a comprehensive listing of resources and services that can help improve the lives of seniors and their caregivers as they strive to resolve their health, lifestyle, and safety issues.

She has also previously served as program manager for care consultation and support groups at the Houston and Southeast Texas Chapter of the Alzheimer's Association and as Vice President for Health Services at Sheltering Arms Senior Services in Houston.

In 1999, Mrs. MacDonald retired from the University of Texas at Houston, School of Nursing, where she served in a number of important roles, including Division Head for Gerontology in the Department of Systems and Technology at the UT-Houston School of Nursing, and Associate Director for Community Affairs and Operations at the UT-Houston Center on Aging.

She received her bachelor’s degree in History from Houghton College and her master’s in Nursing from Case Western Reserve University.

Mr. Cengizhan Keskin: Mr. Keskin serves as Vice President of the Board of Directors. Keskin received a Master of Engineering degree in Petroleum Engineering from the University of Tulsa where he also worked as a research assistant for the University of Tulsa Fluid Flow Projects. Keskin also has a Master of Science degree from the Middle East Technical University, Ankara, Turkey and received his bachelor’s degree in Petroleum and Natural Gas Engineering from the same university.

Mr. Keskin is a petroleum engineer and senior flow assurance consultant for SPT Group, a global provider of technology solutions and personnel for the oil production industry.  Prior to SPT, Mr. Keskin worked as a flow assurance specialist at Schlumberger Technology Corporation in Houston.  Mr. Keskin is active in the academic community, serving as a judge for the science and engineering portions of several Texas middle and high school science fairs.

Mr. Homer Stewart: Mr. Stewart is an electronic engineering technologist, a certified teacher in the state of Texas, and a curriculum development specialist and trainer.  During his career he has served in the Fort Bend ISD, and as a faculty member at the Houston Community College Northeast Campus. Currently, Mr. Stewart, is employed at Subsea Solutions. LLC, where he develops service curricular for subsea well equipment and subsea control systems targeting training of well completion, petroleum, and subsea engineers. Mr. Stewart's interest is empowering students by correlating critical-thinking academic skills with the hands-on implementation, integration, and translation of academic skills and activities to real world applications. Mr. Stewart serves as an advisory member on several committees in the cities of Houston and Sugar Land.


Dr. Kamil Sarac: Dr. Kamil Sarac is an Associate Professor in the Department of Computer Science at The University of Texas at Dallas. Additionally he serves as the Director of the Information Assurance Education Program at the university. His research interests include computer networks and protocols, network security, network and service monitoring and internet measurements, overlay networks and their use in network security. Dr. Sarac obtained his PhD in computer science at the University of California at Santa Barbara in 2002.