Our Board of Trustees
  • Darryl Byrd
    Darryl is Founder and Managing Director of ULTRAte Strategy and Consulting, LLC a community development, urban planning, strategy and management consulting form. Darryl is past President and Chief Executive Officer of SA2020, a 501(c)(3) nonprofit organization he co-founded, which serves as the primary catalyst for progress on San Antonio’s community vision. Prior to SA2020, Darryl served as Managing Director of Pearl Brewery, LLC. Darryl received his Master’s Degree in City and Regional Planning from Clemson University and his Bachelor’s degree in Political Science from Hampton University. He is a member of the American Institute of Certified Planners, a former chairman of the City Planning Commission, and a former Co-Chairman of Leadership San Antonio. He is a member of the Emerging Leaders Council of the Federal Reserve Bank of Dallas, and a board member of the San Antonio Area Foundation and the Santikos Charitable Trust. When not working, Darryl spends his time hiking, biking, and building model rockets, and marveling at the cosmos with his young son, James, a 8th grade student at Keystone.
  • Diane Carl
    PTO Representative

    Diane Carl has served the Keystone School in many roles including grade level annual fund rep, Girl Scout leader, robotics club mentor, upper school rep and currently, she is the PTO president. She helps to promote women owned businesses and advocates for women and girls. Diane has a daughter, Sydney Hileman (Keystone class of 2019), and son, recently graduate Carl Hileman (Keystone class 2017). The family moved to San Antonio in 2006 from Atlanta, a Keystone family since 2007. Diane has been a program director for teen communication and leadership programs presenting at a variety of non-profits and has volunteered for 20+ years with Girl Scouts in roles including trainer, advisor, strategy planning and national delegate. Corporate work has included management consulting/technology field, training and development, recruiting and retail management. Diane earned her bachelor’s degree in speech communications from University of Georgia and is currently pursuing a modular program executive MBA from Emory University. Living in the Monte Vista and Tobin Hill communities over the past 11 years, she loves being in the in-town live-work-play atmosphere. Diane values the inclusive and inviting nature of these growing areas and supporting Keystone as an active and vital participant organization in the surrounding communities.
  • John Engates
    John Engates is the Chief Technology Officer at Rackspace Hosting, the world’s leading specialist in hosting and cloud computing. John joined Rackspace in August 2000, just a year after the company was founded, as Vice President of Operations, managing the datacenter operations and customer-service teams. Two years later, when Rackspace decided to add new services for larger enterprise customers, John created and helped develop the Intensive Hosting business unit. Most recently, John is playing an active role in the evolution and evangelism of Rackspace’s cloud-computing strategy and cloud products. John meets frequently with customers to hear about their needs and ideas for the cloud, and to discuss Rackspace’s vision for the future of cloud computing. Prior to joining Rackspace, John was a founder and General Manager at Internet Direct, one of the original Internet service providers in Texas.  John is a graduate of the University of Texas at San Antonio and holds a bachelor’s degree in Accounting. John is an avid cyclist, camera buff, gadget geek and especially enjoys spending time with his wife and two daughters at home in San Antonio.
  • Michael Fischer

    Michael Fischer is a professor of English at Trinity University, and the inaugural Janet S. Dicke Professor in Public Humanities. For sixteen years, he served in various administrative roles at Trinity, including Vice President for Faculty and Student Affairs and Interim President. Michael is a graduate of Princeton University and received his MA and PhD degrees from Northwestern University. His wife Kim is Associate Dean for Development for the UTSA College of Sciences. They have two adult children.
  • Thomas M. Hart III
    Tom Hart is Chief Executive Officer and co-founder of Jonah Energy, LLC, an acquisition-focused oil and gas company that is a major producer of natural gas in the Rocky Mountain region.  Tom was previously a senior officer of El Paso Corporation, a Fortune 500 energy company, where his responsibilities included acquisitions and divestitures, corporate development, strategy and planning.  He began his career as a corporate and securities attorney in Houston.   Tom holds a BA from Trinity University, a JD from the University of Texas School of Law and an MBA from UT’s McCombs Graduate School of Business.   He serves on the Board of Directors of Oiltanking Partners, LP and the Advisory Board of the Trinity University School of Business, and previously served on the Board of Trustees of the Houston Museum of Natural Science.   Tom and his wife Elizabeth are both originally from San Antonio, where they now live.  They have two children, including a daughter who graduated from Keystone.
  • Laura Johnson
    Laura McAllister Johnson was born in Paisley, Scotland in 1953.  In 1977, upon the completion of her education in banking, she moved to the British Crown Colony of Hong Kong.  Within six months she had, with a partner, started her own small design studio, a business which, over the next 14 years grew into the largest independent fully accredited advertising agency in Hong Kong. Along the way Laura opened a chain of British Pubs and was co-founder of King&Country, the world’s leader in the production of military miniatures.  While in Hong Kong, Laura became highly involved in local charities which involved animals, children, the elderly and war veterans.  In 1994, Laura met her future husband, Belton Kleberg Johnson.  They married in Hong Kong in 1996.  Sadly, this happy epoch in Laura’s life was not to last.  Her beloved B became ill and lost his life to pancreatic cancer in 2001. In 2002, Laura was blessed by the arrival of a beautiful baby boy, her chosen son named Jamie.  One year later, she was again blessed by the arrival of her precious baby daughter, Honor.   Apart from raising her family, Laura remains involved in King & Country.  She has been a member of First Presbyterian Church since 1995.  She has also served on the board of Mission Road Ministries and currently serves on the Board of Operation Comfort. 
  • Pat Kalmans
    Pat Kalmans was born in Houston, Texas.  She attended Vanderbilt University, and after graduation, was employed by the Family Service Association of Nashville to be their first Family Advocacy Specialist. In 1973, Patricia moved to Appalachia where she worked for a public interest law firm specializing in community development projects in the East Tennessee region.  She left East Tennessee to attend law school at Georgetown University Law Center.  Upon graduation, she began a four-year stint with Georgia Legal Services Program (GLSP) as a staff attorney and health law specialist. It was in Georgia that Patricia met her husband, Dr. Michael Ozer, and a year after their marriage in 1981, they moved to San Antonio.  Patricia was employed for eight years with the law firm of Beck & Beck, P.C.  In 1990, she and two other women started the first all-women’s commercial law firm in San Antonio, and maintained an active business litigation practice at her own firm, Habbeshaw Kalmans, P.C. for 25 years. Now retired from the practice of law, Pat is an active volunteer.  She is currently a member of the board and executive committee of Planned Parenthood South Texas. In the Jewish community, Pat has been a member of the boards of the Jewish Community Center, the Eleanor Kolitz Academy, and the Jewish Federation of San Antonio, where she served in numerous capacities including President from 1998-2000 as wells as chair of the Community Relations Council from 2011-2015. Pat is the mother of two children, Zachary Ozer and Joshua Ozer, both of whom graduated from Keystone School. 
  • Carla Katselnik

    Carla Katselnik is a native of San Antonio, TX. She graduated from the University of Texas at San Antonio with a B.S. in Biology. She attended the University of Texas Health Science Center at San Antonio Dental School and graduated with a D.D.S. degree in 2003. In 2009, Carla and Daniel Katselnik welcomed their first daughter, Victoria. Victoria is currently a 2nd grader at Keystone. Their family grew again in 2011 with the birth of Cecilia. Cecilia attended the Little School of Keystone and is currently in Kindergarten at Keystone. Carla serves as the Lower School PTO Representative. She and her husband, Daniel, are the Annual Fund Captains for the school this year. Their family looks forward to being a part of the Keystone community for many years to come.
  • Wasif Latif
    Wasif Latif and his wife, Roshnic Latif, have two boys attending Keystone School, Huzair (class of 2019) and Hashim (class of 2021).  The Latif's moved to San Antonio in 2006 from Northern New Jersey.  Wasif works as an investment Portfolio Manager at a large financial services company where he overseas several investment products. Prior to that Wasif spent eight years as a portfolio manager at Deutsche Bank Private Wealth Management (DB PWM), where he was responsible for managing two families of fund products, as well as an international equity fund. He earned a master's degree in business administration from the University of Illinois at Chicago, and a bachelor's degree in finance from the University of Indianapolis.
  • Laura O' Donnell
    Laura O’Donnell is a Partner with the international law firm of Haynes and Boone where she practices management-side employment law and leads the firm’s wage and hour litigation practice group.  Laura was recently named the “2016 Lawyer of the Year” for labor and employment litigation in San Antonio by Best Lawyers, Woodward/White, Inc. Laura’s other awards include repeated recognitions as a top management-side employment attorney by publications including Best Lawyers, Texas Super Lawyers and San Antonio Scene.  In 2013, Texas Lawyers recognized Laura as one of the Top 50 Women Lawyers in Texas and one of the Top 50 Lawyers in Central/West Texas.  Laura was also named one of San Antonio’s 40 Under 40 Rising Stars by the San Antonio Business Journal in 2006 and as one of America’s Up and Coming Leading Business Lawyers in Employment Law by Chambers USA from 2005 to 2009. Laura received her undergraduate degree from Trinity University in 1993 and her J.D. from Baylor School of Law in 1996. Laura is married to Mike, who is a partner at the international law firm of Norton Rose Fulbright.  Laura and Mike are proud parents of two amazing Keystone students, a son in fourth grade and a daughter in third grade, both of whom have attended Keystone since kindergarten.
  • Kumar Reddy
    Kumar Reddy is a Keystone School Alumnus, and graduated as a member of the Class of 1993. He then attended Southwestern University in Georgetown for his undergraduate degree. This was followed by medical school training in Chicago, where he met his wife, Dr. Ami Bhalodia. They did their residency and fellowship training at Louisiana State University and started their family during that time. He moved back home to San Antonio in 2013, as a Neurologist and Sleep Medicine Specialist with River City Neurology at Baptist Health Systems. His two sons continue the family's Keystone Cobras legacy, with Shashi joining the school as a 2nd grader in 2013, and Dev starting at the Little School of Keystone in 2014. Kumar has participated as class and Little School representative in numerous fundraising events these past three years since his return to the San Antonio community, and hopes to continue his contribution to Keystone through service in the years to come.  
  • Juliana Robledo
    Juliana Robledo is a native of Colombia, South America. She is married to Sam Stevens who is a long time Keystone parent and former board member. His kids Hillary Stevens, Sammy Stevens, Danny Stevens and Zoe Stevens all attended Keystone. Now Juliana and Sam have Isabella(6th) and Luciana(2nd). Juliana is a dentist with a specialty in oral and Maxillofacial Pathology from the University of Florida and she landed in San Antonio for additional training in Head and Neck Pathology at the UT Health Science Center San Antonio. When Juliana is not busy looking into her microscope or giving a pathology lecture, she and Sam enjoy their ranch down in Poteet, where they raise cattle and hay all year round.
  • Jeremy Shaw
    Alumni Representative
    Jeremy and his wife, Kathy, met in college in 1988 and have been married for 24 years. They have a 7 year old son and 1 year old daughter. Jeremy is a Realtor and asset manager. After over 20 years in real estate related ventures—including renovation, design, new home sales and construction, and property management in addition to sales—he has earned numerous accolades and awards including a Summit Award from the Greater San Antonio Builders Association and a Lifetime Earnings Hall of Fame Award from REMAX of Texas. Jeremy is frequently asked to advise developers such as Toyota Housing USA, Access Homes, and Starnes Custom Homes. Jeremy enjoys working regularly to help families in conjunction with Habitat for Humanity both as family liaison and labor volunteer on numerous projects. Jeremy is President of the Alumni Council and attended the Keystone School from 1979-1984 and was fortunate to have Coach & Mrs Eargle, Dr Prince, and Mr Babel among his teachers and mentors.
  • Jay Srikanth
    Vice Chair
    Jay Srikanth was elected to the Board of Trustees in May of 2011 and is the current Vice-chair. He and his wife Gayathri have two sons, one of whom graduated from Keystone in 2013 and the other in 2016.  Jay has been a strategic leader within the ICT, Software & Services industry for more than 26 years. Following a graduate degree in Computer Science, Jay has been an integral part of the global technology evolution, holding senior leadership positions in multiple countries. Prior to joining the Board, Jay was part of the Keystone Strategic Planning Committee that established the strategic plan in 2009 to accompany enhancements to technology and facilities on campus. On the Keystone Board, he is active on two committees: Mission & School Life and Trustees & Governance. His Board goal is to continue to improve the educational experience of Keystone students so they can be prepared to become the global leaders of the future. Jay and his family moved to San Antonio from Seattle in June 2008, when their sons were in middle school. They discovered Keystone at the time and found it to be a perfect fit for the entire family. While in Seattle, Jay also spent time as a teacher in an “unity of faith” organization, supporting the instilment of fundamental human values in young children. Jay and his wife look forward to supporting Keystone and helping the school maintain its reputation for academic excellence and for providing a well-rounded education for its students.
  • Stephanie Stevens
    Stephanie Stevens and her husband Mark have two daughters, Claire and Ellen, both of whom have attended Keystone.  Claire is a graduate and a “lifer,” having attended since entering Kindergarten in 2002. Stephanie received her Juris Doctor degree from St. Mary’s School of Law in 1991.  After practicing law full time in and around San Antonio for several years, she joined the faculty of her alma mater, where she is currently a Clinical Professor of Law.  In addition to teaching classes in Juvenile Law and Texas Criminal Procedure, Stephanie supervises the school’s Criminal Justice Clinic, where she teaches third-year law students and provides them with the practical tools necessary to become trial lawyers upon graduation.  In 2010 the St. Mary’s University Alumni Association awarded her the Distinguished Faculty Award. Stephanie was President of Keystone’s Parent-Teacher Organization in 2012-2013.  In 2011-2012 she and Mark co-chaired Keystone’s Annual Fund.
  • Hannah Steward
    Faculty Representative

    Hannah Steward currently teaches third grade and serves as the faculty representative on our Board of Trustees. This marks her 11th year at Keystone and 16th year teaching. is originally from Des Moines, Iowa. Upon graduating from the University of Northern Iowa with a degree in Elementary Education specializing in Language Arts and Reading, she moved to San Antonio to pursue a career in education. She fell in love with San Antonio’s culture, history, and warm winters. While teaching in public and private schools, Hannah earned a Masters in Curriculum and Instruction. Hannah joined Keystone in 2006. With the bright, motivated students, and the supportive and caring parents, Hannah knew that she had found a unique community. Hannah and her husband, Brian, have a 2-year-old daughter, Grace. When she isn’t chasing Grace around, she enjoys travel, music festivals, and fantasy football. She looks forward to serving on the Board of Trustees and sharing her perspective, experience, and enthusiasm.
  • Tim Vu

    Tim was born in Vietnam and grew up in Northern California. He moved to San Antonio in 2004. He is a graduate of the University of California, Los Angeles and obtained his M.D. from Albert Einstein College of Medicine in Bronx, NY. He completed his residency training in emergency medicine in San Antonio at Lackland AFB/Brooke Army Medical Center. He served on active duty in the US Air Force for 7 years and has had multiple deployments stateside and overseas, including a special operations assignment in Afghanistan. He held key leadership positions in the military and civilian sector, working on multiple committees to improve processes, budget goals, and staffing. An author of multiple publications, one of his proudest achievements is a departmental teaching award that was presented by his students and residents. Tim is a partner with Complete Emergency Care, a freestanding emergency company with over 20 locations throughout Texas and Colorado. In addition to operational and management duties, he also maintains a clinical role as medical director. His other entrepreneurial pursuits involve residential and commercial real estate and most recently, a telecommunications construction company which he co-founded. Tim and his wife Christina are the proud parents of two Keystone students, Emma and Mia. They are most grateful for the culture and community of Keystone and its staff, and hope to contribute to its mission of nurturing the minds, bodies, and spirits of its students.
  • Craig Weber
    Craig Weber and his wife, Eva, have two sons in the Lower School: Cameron (2nd grade) and Colton (Kinder). Craig is the CEO of Celent, a global technology research firm focused on financial services. Previously, he led the firm’s insurance division. He began his career as a management consultant in 1989, and has enjoyed tracking technology trends ever since. He is frequently featured as a speaker at industry events, addressing diverse topics such as systems modernization, innovation, and creative disruption. He received his M.A. from Emerson College in Boston. He and his wife co-chaired the Annual Fund in 2015-16 and served in the same capacity in 2016-17.
  • Amy Zesch

    Amy Zesch grew up in San Antonio. She graduated from Vanderbilt University in 1981 and then attended the University of Texas at Austin, earning an MBA and an MA in Communications. Amy enjoyed a short career producing and directing instructional media before retiring to raise a family. She and her husband Hal have four children, two of whom graduated from Keystone: Jordan in 2010 and Hannah in 2012. Except for a year’s employment with First Presbyterian Church as Interim Director of Children’s Ministry, Amy’s energy has been devoted to family and community. She has volunteered with the Junior League of San Antonio and San Antonio Youth Literacy, and has served on the boards of Mission Road Ministries and the Landa Gardens Conservancy. At First Presbyterian Church Amy has completed two rotations as an elder, chairing and working on numerous committees. Additionally, she has been president of Presbyterian Women and a discussion leader for Bible Study Fellowship. Currently Amy teaches preschool one day a week in a Children’s Day Out program. Amy is especially proud of her work on the Keystone PTO. Drawing upon years of experience with PTOs in the Northside and Alamo Heights school districts she helped shape what was, at the time, an “infant” Keystone PTO. While on the Parent Council Amy set up and administered the PTO’s first balanced budget, proposed and then produced the early issues of KeyNotes, and chaired the committee that drafted the PTO’s current by-laws. “I am honored by the opportunity I now have to support and impact the best school in San Antonio as a member of the Board of Trustees!”
  • Harold Zuflacht

    Harold Carl Zuflacht is a founding partner at Higdon, Hardy & Zuflacht LLP a San Antonio law firm that focuses on family law. Harold is Board Certified by the Texas Board of Legal Specialization in Family Law. Additionally, Harold is a Fellow of the American Academy of Adoption Attorneys, a Fellow of the American Academy of Matrimonial Lawyers and a Fellow of the International Academy of Family Lawyers. Throughout his career, Harold held various offices at SAFLA, the organization of Board Certified Family Law specialists in San Antonio, including Treasurer, Vice President and President. Harold has also been involved in community banking in Texas. He served on community advisory boards, business development boards and loan committees for several banks ranging in size from three hundred million to 1 billion dollars in assets. Harold has a long-standing love for Keystone. He is both a Keystone graduate and a parent of Keystone students. He attended Keystone from first grade through graduation from high school. He recognizes the quality of the Keystone education and appreciates the benefits of the Keystone experience for both parents and students. In addition to being a Keystone Alumnus, Harold and his wife Marta have two children who attend Keystone. Hannah and Jacob. Harold earned a BA Degree in Economics from Tulane University and his JD from St. Mary’s University. When not working, Harold loves spending time with his family. In addition to his wife and two children, his family includes six cats and two dogs. His favorite past times include cooking, wine collecting, coin collecting, and shooting.