Semmer-Carl225.jpgCarl Semmler has been serving in Catholic education since 1986. His formal education includes earning a B.S. in Communications Management from New York University, completion of the Philosophy/Pre-Theology program at St. John’s University, earning an M.A. in Theology from Immaculate Conception Seminary and a Ph.D. in School Administration from Queens College. Finally he has completed a doctoral degree in Instructional and Educational leadership at St. John's University.

Dr. Semmler has had the pleasure of teaching students in parish religious education programs well as youth ministry. In addition, he has formally taught theology and philosophy on the secondary school level, as well as directed campus ministry programs. These endeavors included creating academic, service, prayer and retreat programs. Dr. Semmler has served on multiple committees on the school, superintendent and diocesan levels, ranging from educational certification to school strategic planning and reconfiguration. Dr. Semmler held educational leadership positions as principal and associate superintendent within the dioceses of Long Island, N.Y. He has had the opportunity to work in adult education as an adjunct professor at St. John's University and Brooklyn College. He taught courses in Catechetical Certification for the Diocese of Rockville Center.

His most recent research surrounds the analysis of Catholic educational strategic planning within dioceses which are experiencing demographic changes. Dr. Semmler is happily married to Christine and they have three beautiful children named Sophia, Thomas and Timothy.


Tolcher, Mark headshot.jpegMr. Tolcher joins CTK after close to 20 years in Catholic education in the Atlanta area. Mr. Tolcher started his career at Our Lady of Mercy Catholic High School in Fayetteville, GA as a multi-sport coach, campus minister, and theology teacher. At OLM, Mr. Tolcher led students on several national and international mission trips as a teacher and state championships in athletics. Mr. Tolcher moved to Blessed Trinity Catholic High School in Roswell where he taught and instituted a virtue-based program in the athletic department. He then served as a school administrator as an Associate Assistant Principal before moving to the position of Director of Enrollment.

Mr. Tolcher has a Bachelor of Science in Public and Urban Affairs from Georgia State University, a Master’s Degree in Theology from Holy Spirit College in Atlanta, and a Mastersof Educational Leadership from Dayton University in Ohio.

Mr.Tolcher joins the CTK community along with his wife. They have five children. In his spare time, Mr. Tolcher likes to read, play and watch sports, grill out, and pretty much anything that gets him outside.




Fr. Aaron Huber is one of ten children.  He was born in Charleston, South Carolina, then later moved to Cruso, North Carolina.

Fr. Huber was ordained to the priesthood for the Diocese of Charlotte in 2022.  He graduated from St. Joseph College Seminary in 2018 with a degree in Philosophy and a minor in Theology and Latin.  He then attended Mount St. Mary’s Seminary and School of Theology in Cincinnati, where he earned a Masters of Divinity.  He served as parochial vicar at St. Mark Catholic Church until being named Chaplain of Christ the King Catholic High School in 2023.

Assistant Principal

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Brian Keenan was born and raised in Northern Virginia, just outside of Washington, DC. He earned a Bachelor of Arts Degree in Government and International Politics from George Mason University. After graduate studies at Georgetown University, he switched career paths and earned a Master of Arts Degree in Curriculum and Instruction from George Mason University. He worked as a social studies teacher at Vance High School, where he was social studies department chairman, chairman of the School Leadership Team, and on the Instructional Leadership Team. After six and half years in the classroom, he went back to school and earned a  postgraduate Certificate in School Administration from University of North Carolina at Charlotte in their Aspiring High School Principals program. He then was hired as High School Assistant Principal at Mountain Island Charter School, where he stayed until he was hired at Christ the King Catholic School. He is currently a doctoral student in Educational Leadership at UNC Charlotte. 

Mr. Keenan and his wife, Kristyn, both grew up in the Protestant tradition. When they moved to Charlotte in 2015, they both entered into RCIA, and after much prayer and study, and by the grace of Christ through the Holy Spirit, they both were received into the Catholic Church in 2018. They live in Davidson, NC with their four children and are practicing and active members of St. Mark Catholic Church. 

Dean of Students

Screen Shot 2020-09-29 at 1.01.02 PM.pngSusan Bukowski was born and raised in Southern California. She earned a Bachelor of Art Degree in Theater from U.C.L.A. and worked in the theater for many years at The Music Center of Los Angeles. After marrying and beginning a family, Mrs. Bukowski moved to Las Vegas, Nevada where she returned to school and earned a Master’s Degree in Education. She taught English for the Clark County School District and earned the status of Highly Qualified English Teacher. She was the English Department Chair and was awarded Teacher of the Year. She also taught English Language Learners and produced and directed theater. In accord with her belief that it is important to educate youth beyond the classroom, she planned and coordinated student trips to various educational sites across the United States. At the urging of her principal to enter administration, Mrs. Bukowski earned a second graduate degree in Education Leadership and Administration and worked as Dean of Students.

She and her family then moved to North Carolina. Here she has been awarded an EOG bonus for outstanding growth in reading scores. At UNC Charlotte, she worked as an Adjunct Professor and Supervisor of Student Teachers. She was creatively proactive against student bullying and her work in this regard was featured in the newspaper and in the book, “Reading to Make a Difference” by Dr. Katie Kelly.

Mrs. Bukowski has been a lifelong Catholic and feels very blessed to be working at Christ the King Catholic High School where she can combine her love of education and her faith.  She loves the performing arts, traveling, gardening, writing, and spending time with her husband John of 38 years, family, grandchildren, friends, and dog, Harley.


President - Dr. Carl

Principal - Mark Tolcher -

Assistant Principal - Brian Keenan

Dean of Students - Susan Bukowski

Chaplain - Father Aaron Huber

Athletic Director - Markus Duckworth -

Administrative Assistant - Erin Andrews -

Receptionist - Shannon Holleran -

Facilities Maintenance - Steve Italiano -

Business Assistant - Kim Mastrone -

School Nurse - Stephanie Miller -

Director of Advancement - Nicole Seeling -