Darryl Hemphill

Athletic Director

After his career in professional football, Coach Hemphill has spent the past 35 years serving the community of San Antonio as a teacher, head coach, athletic director, and campus administrator. He is well-respected in both educational and athletic circles, and has vast experience in program development, athletic facilities management, and creating and sustaining a winning culture. After the tragedy at Robb Elementary in Uvalde, Coach Hemphill drew upon his leadership and pastoral heart to step in as a Principal and bring healing to Uvalde CISD. He is dynamic, caring, and passionate about helping young people win on and off the field. 

Clayton Guillory

Head of Football Operations

Clayton Guillory is a native of Houston, Texas. He attended college at Angelo State University where he earned a Bachelor’s degree in Business Marketing.
 
Clayton worked for twenty years in business sales and ten years in pharmaceutical sales. He has coached football for over ten years.
 
Clayton is passionate about helping young people prepare for their lives beyond high school.

Jason Stein

Varsity Head Baseball Coach

Jason Stein has been a coach, scout, and baseball player for over 25 years, with 17 of those years at the professional level. He most recently served as the Hitting and Infield Coach for Scottsdale Community College in Arizona before coming to Cornerstone Christian Schools (CCS).

Stein spent eleven years at the Major League level as an Assistant Hitting Coach. He is also a graduate of the Major League Baseball Scouting Bureau. After playing shortstop at Rockledge High School in Florida, Stein went on to play second base at Richland College in Dallas, Texas where he won back-to-back Junior College World Series championships.

Mike Carter

Varsity Volleyball Coach

Coach Mike Carter began his career at Randolph High School from 1990-95 and then coached at Holmes High School from 1995-99 where he guided the volleyball program to a Top 10 Texas ranking.

He launched the Reagan Rattler volleyball program in 1999 and earned a berth in postseason play every season. He has frequently coached teams at the National and Open levels of competition, served as the Regional Director for the Texas Girls Coaching Association, and was chosen as a coach for the State All-Star game in 1998, 2007, 2016, and 2017.

Coach Carter served four years in the United States Air Force, earned his bachelor’s degree from Southwest Texas State University, and his Master’s at Texas A & M, Kingsville. 

Therese Bass

Head Varsity and Middle School Golf Coach

Therese Bass joined the CCS staff in the spring of 2011 at the helm of the Cornerstone Warrior Golf Program. Under Coach Bass’ leadership, the Varsity Boys’ and Girls’ golf teams have earned numerous team and individual honors. Both teams have qualified for regional and state competitions, individually and as a team. Coach Bass also heads up the CCS Middle School Golf Program.

Seventy individual medalists boast honors in the Independent Schools Athletic League (ISAL) Conference in the years of competition under Coach Bass, including a first-place finish at the ISAL Par Girls’ Team Championship in 2017-2018.

Coach Bass graduated from Texas State University in May of 1981 with a Bachelor of Science degree in Education.

Asaf Cuellar

Varsity Boys Soccer Coach

Born and raised in Monterrey, Mexico, Asaf Cuellar first developed a passion for playing soccer at the age of four. He played soccer through high school and at the Monterrey Institute of Technology and Higher Education (ITESM) with Monterrey’s Tec. Under their great teaching and leadership, he developed his academic and athletic skill and experience.

For the last eight years, he has coached in different clubs and leagues in the San Antonio area. In addition to other certifications, he is currently pursuing a “D” license under the U.S. Soccer Federation which is highly recommended for competitive coaches of players who are 14 and older.

After many practice sessions, games, and tournaments, Coach Cuellar firmly believes that soccer can shape and mold skills in sportsmanship, character, teamwork, respect for authority, and a childlike honesty that can last a lifetime. He looks forward to adding a spiritual dimension where athletes develop a relationship with God and with the beautiful sport of soccer.

Terry Barton

Girls Basketball Coach

Coach Barton is entering his 36th year as a basketball coach and has been in the San Antonio area since 1997 at Medina Valley, Reagan, and Harlan. In his first year at Cornerstone Christian School the Lady Warriors went 24 – 7 and won the TCAF State Championship and was named TCAF Coach of the Year. Previous schools Coach Barton taught and coached at include, Madisonville High School (TX), Liberal High School (KS), Coolidge High School (TX) before moving to San Antonio in 1997. Coach Barton was also a Graduate Assistant for Leonard Hamilton at Oklahoma State University in 1988/89, when the school was part of the Big 8 Conference. He has been a Head Basketball coach for 27 years and currently has 516 career wins. In his career he has coached football, baseball, softball, and track and led Reagan High School to the 6A State Tournament in 2012. Coach Barton is approaching his 25th wedding anniversary to Jill Barton who is also an educator at Communications Arts High School and has 2 kids Kristopher (23) and Kathleen (19).

Randy Schuster

Boys Basketball Coach

Coach Schuster will be entering his 40^th year as a basketball coach in the San Antonio area.  In his first season at Cornerstone Christian School the Warriors went 21-11 and won the TCAF State Championship and he was named TCAF Coach of the Year.    Previous schools Coach Schuster has coached and taught at include Alamo Heights, Churchill, Johnson, Randolph, Madison and Antonian.  He has 20 years of head basketball coaching experience and is approaching 400 career wins. In his career he has coached football, baseball, and in track the 2018 UIL 6A state high jump champion.  He is a member of  the coaching professional organizations TABC and THSCA.  Coach Schuster has been married 28 years to Tjwana Schuster and has 3 boys – Brett (25), Brannon (24) and Bryce (20).

Janio Cabezas

Head Middle and High School Girls Soccer Coach

Janio Cabezas, who has more than 30 years of soccer experience, begins his new challenge as the Head Girls Varsity Soccer Coach here at Cornerstone Christian Schools (CCS). Cabezas earned his bachelor’s degree in Marketing and Human Relations at the center of Barcelona, Spain in 1988.

Cabezas played professional soccer for more than 15 years in South America. He began his coaching career in Manizales, Colombia, as the head coach of the Corp Deportiva Once Caldas in 1989. Cabezas also coached the Athletic Buenaventura team in 1993, followed by a two-year stint at Corp Deportiva America Third Division. In 1997, he coached a semi-professional team (Puma) in San Antonio.

Cabezas then transitioned into youth coaching for one season, beginning with the Chivas School of Soccer, followed by a short stay with the Strikers Soccer Club (1999-2003).

He coached at the University of Texas at San Antonio (UTSA) as an assistant soccer coach for almost six years, helping to lead them to the 2010 championship of the NCAA Southland Conference Soccer Tournament. He also has coached the CCS Middle School team, leading them to two championships.

Philip Reichle

Varsity Tennis Coach

Coach Reichle is in his second year of coaching High School and Middle School Tennis at CCS. In his first year, CCS Varsity Tennis won the State Championship and several players won the State Championship in Singles, Doubles, and Mixed Doubles.

Coach Reichle plays tennis regularly in Men’s leagues, and he has a Universal Tennis Rating (UTR) of 4 in Doubles. He and his wife, Jennifer, have been married 24 years, and they have 2 sons. Caleb is a Junior at Texas A&M studying Civil Engineering. Nathaniel just graduated CCS and was ranked 3rd in the Class of 2024. He is a Freshman at Abilene Christian University. Both of Coach Reichle’s sons are State Tennis Champions. Caleb in Boys Doubles in 2022, Nathaniel in Boys Singles in 2023 and 2024, and in Mixed Doubles in 2024.

In 2016, The Reichle family sustained life-threatening injuries in a tragic “head-on” collision when a young driver crossed the line and hit their car at 70mph. The Lord sustained them, healed them and brought them through the long process of recovery and rehabilitation. A doctor recommended tennis as part of their rehab, working on eye-hand coordination, memory, and building back strength. They were all tennis players before, but tennis became a key force in their rehabilitation.

Coach Reichle has a Master of Divinity from Alliance Theological Seminary, and a BA in Astronomy and Physics with Minors in Math, Statistics, and Religious Studies from the University of Tennessee. He is passionate about coaching tennis and teaching. This year he is teaching AP Statistics, AP Physics, Levels Physics, and Pre-Calculus. Whether one of his tennis players is picking up a racket for the first time or plays at an advanced level, Coach Reichle wants all his players to be successful, to develop a love for this life-long sport, and to grow in their Christlikeness as they “serve one another in love.” (Galatians 5:13)

Wesley Moore

Head Wrestling Coach

Coach Wesley Moore graduated from Keller High School where he participated in Varsity Football, Wrestling, and Track. He was recruited and signed to play football for Texas A&M-Kingsville. He later graduated with a degree in Kinesiology from Tarleton State University. Since then, Coach Moore has coached wrestling at Cowboy Capital MMA, the Stephenville Wrestling Club, Rodrigo Pinheiro Brazilian Jiu-jitsu, and Churchill High School. He has worked as a lead guide at Wilderness Expeditions in Salida, Colorado, Wilderness Trek Ministries in Midland, Texas, and Lake Cisco Christian Camp in Cisco, Texas. Most recently, Coach Moore has been teaching Health and P.E. at Eisenhower Middle School in San Antonio. He is married to his beautiful wife, Monica Moore.

Celina Castillo

Head Softball Coach

Born and raised in Tucson, AZ, Celina Castillo will join the CCS family as the Softball Head Coach. Celina has been involved in softball for over 30 years. She was a 4-year varsity letterman in high school, and then went on to play Softball and Volleyball at Pima Community College where she was named Second Team All- Region for softball. She then continued her softball career at Angelo State University (ASU). After a career ending injury, she continued as a student coach for Angelo State for two years. While a Student Coach, ASU were the 2004 DII National Champions. She graduated from Angelo State with a Bachelor of Science in Kinesiology. In 2014-2017, she was an assistant coach at University of the Incarnate Word (UIW) while receiving her Masters in Sports Management.

Celina is excited to be part of CCS to help build strong, confident, respectable student athletes with her knowledge and experience of the game. Celina is married to Clayton with 3 children - Step daughter Caitlyn (20) attends Sam Houston University, son Esteban (18) will be attending West Point to play Football, and daughter Ariana (8) is in 3rd grade.