Staff members from Lewisville ISD’s Flower Mound High School traveled with Associate Principal Shannon Knowles to Argyle ISD to show support as she transitioned to principal of Argyle High School.

The board of trustees announced Knowles as the new principal at a March 25 board meeting, where her Flower Mound family gave her a send-off. Knowles is replacing John King, who is retiring at the end of the school year after serving as principal for the past six years.

“We are very excited to have Mrs. Knowles join our Eagle leadership team,” Argyle ISD Superintendent Courtney Carpenter said. “She is an exceptional leader who brings valuable career experiences and knowledge of the Argyle ISD culture to the position. Mrs. Knowles has been an Eagle for many years and is deeply invested in her commitment to seeing our students soar.”

The details

Knowles joins AISD after serving in Flower Mound since 2017. She has more than 25 years of experience in public education and served 15 combined years in leadership roles in Lewisville ISD, Carpenter said. Before joining Flower Mound High School, Knowles was a teacher and athletic coordinator in LISD. She is also a member of the community and an Argyle ISD parent.


“She is coming to us from a district of growth and a community that has multiple high schools. Flower Mound itself has two, and so we are going to rely on her a lot as we prepare to implement our 10-year strategic growth plan,” Carpenter said.

Knowles started her career in education in 1999 as a teacher and coach at Haltom High School. She has also served at Birdville High School, Coppell ISD and Troup ISD, and is a graduate of Midwestern State University, according to district documents.

Also of note

While serving at Flower Mound, Knowles oversaw athletics, cheer, performing arts, UIL academics, special education, foreign language and student council. Additionally, she led and organized content-level professional learning communities. Knowles also has experience as a special education teacher and coach.


“I am honored and thrilled to be named the new principal of Argyle High School,” Knowles said. “Having been a part of this community for the past eight years as a parent, I am deeply committed to continuing the tradition of excellence and fostering a positive and supportive learning environment for all students. I am eager to join the incredible team at Argyle High School and work together to achieve great things for our students.”