Administrator Bios

  • Francisco Miranda, Principal

    Principal Francisco Miranda is happy to be the leader of Nimitz after four years as principal of Crockett Middle School. In addition to his high school and middle school leadership experience as an Associate Principal, Mr. Miranda taught at the elementary school level, serving as a bilingual reading, language arts and social studies teacher for fourth and fifth grades.


    Mr. Miranda was born and raised in Dallas, Texas in the South Oak Cliff area. He attended all Dallas ISD schools and graduated from South Oak Cliff High School. Principal Miranda received his bachelor’s degree from Northwood University and a master’s degree from the University of Texas at Austin.  He looks forward to continuing a positive and collaborative relationship with the Irving community and is very proud to be a Nimitz Viking.



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  • Mary Kay Dixon, Associate Principal

    Mary Kay Dixon is passionate about education and Irving ISD. She - as well as her parents, husband and both sons - graduated from Irving High School. It was in a fifth-grade classroom at Schulze Elementary where she wrote a research paper about being a teacher that she first felt that she wanted to follow in her grandmother’s and mother’s footsteps to be a teacher. She is proud to say that she is a third-generation Irving ISD educator.


    She graduated from Texas Woman’s University (TWU) with a Bachelor of Science and Master of Education. Later in her teaching career, she decided to pursue an administrative position and returned to TWU to complete her principal certification.


    She was passionate about completing her student teaching in Irving ISD with an assignment to teach second grade at Barton Elementary. This just so happened to be the same school which she attended first, second, and third grade and where her mother taught fourth grade. She was so excited to return to Barton for a second-grade teaching position for 17 years. While at Barton, she took on leadership responsibility as second-grade lead teacher and vertical team leader. For the next nine years, she served at Brandenburg Elementary as lead special education teacher, intervention teacher, center manager for 21st Century Learning Center and instructional specialist, before moving into the assistant principal position. She was assistant principal at the Wheeler Transitional Development Center for four years before moving to Nimitz High School. She is excited to serve at Nimitz High School this year as associate principal.



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  • Amanda Brown, Assistant Principal  

    After 15 years in Education, Amanda Brown believes in the power of collaboration among teachers, administrators, parents, and community stakeholders to ensure that all students can learn and have the right to a quality education.

    Before moving to Texas with her family, Mrs. Brown taught English, Theatre, and Dance in Connecticut, West Virginia, and Mississippi where she was named Mississippi Theatre Teacher of the Year in 2009. While being in Irving ISD, she has served as an English teacher, department chairperson, and campus Academic Specialist at Nimitz.  She is excited and honored to remain a Viking as she transitions into administration as an Assistant Principal. 

    Mrs. Brown earned her Bachelor of Arts in English Education from West Liberty University in West Virginia and her Master of Education in Educational Administration from Lamar University.  When she’s not at school, Mrs. Brown loves spending time with her husband and three sons, reading biographies, and traveling to NYC to enjoy the latest Broadway debut with her mother.

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  • Samuel Hernandez, Assistant Principal

    Mr. Hernandez began his teaching career in 2013 in Dallas ISD as a high school science teacher at Moises E. Molina High School. He has worked in four educational capacities: teacher, dean of students, attendance administrator and assistant principal. Within these fields, he has had the opportunity to serve with parents, connect with students and improve the instructional capacity of teachers. He also served as curriculum and test writer for DISD before pursuing a leadership role in Irving ISD.

    Mr. Hernandez is committed to building strong community ties and serving students to make them college, career and life ready. Mr. Hernandez holds a Bachelor of Science in Biology, Bachelor of Arts in Spanish from the University of Texas at Arlington and a master’s degree in Educational Administration from Lamar University.

    It is an honor for Mr. Hernandez to be part of Nimitz as an Assistant Principal. He has much to offer in the way of leadership, creating collaboration opportunities and establishing ongoing, open communication.


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  • Lee Parker, Assistant Principal

    Mr. Parker started in Irving ISD in 2003.  Prior to becoming a Nimitz Viking, he served at Cardwell Career Preparatory Center as an assistant principal, at MacArthur High School as an assistant principal, and at Travis Middle School as athletic coordinator.


    Mr. Parker received his Bachelor of Science from the University of Texas at Arlington and his Master of Education from Lamar University.  When Mr. Parker is not at school interacting and building relationships with teachers and students, he enjoys hunting with his daughters, Texas Rangers baseball, and the Dallas Cowboys. 



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  • Wendy Trammell, Assistant Principal

    Mrs. Trammell knew she wanted to be a teacher when she was 6 years old. Inspired by her kindergarten teacher, Mrs. Webb, Mrs. Trammell would play school with the kids on her street where she grew up and was always the teacher.  Her mother bought her a gradebook, and she used it every summer in her neighborhood class. 


    Mrs. Trammell became a Nimitz Viking in 1996. She is truly dedicated to the students, parents and staff at Nimitz.  During her years with Irving ISD, she has served as a Career and Technology Education teacher, government teacher, intervention coordinator, dean of students, administrative liaison, summer school assistant principal, summer school principal and assistant principal. She graduated from Texas Woman’s University with a Bachelor of Science in government and business administration and from Lamar University with a Master of Education in educational administration. She has served on several committees at the school and district level throughout her time in Irving ISD. Mrs. Trammell has an open-door policy for parents, staff and students and enjoys helping anyone who needs assistance.


    When Mrs. Trammell is not at school, she enjoys spending time with her husband who she has been married to since 1994 and her daughter. She has a French bulldog named Piper whom she adores. Her favorite three places to visit are her childhood home, Fort Walton Beach, Fla., and New York City.



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