Directory

Coming to St. Mark’s in 2022, Anna Crouch is senior associate director of Admission and Financial Aid. She earned a bachelor’s degree from Dickinson College. Prior to joining the School, Crouch was director of Admission at Mercersburg Academy, a college preparatory boarding school. At Mercersburg, she served as dorm parent, class dean, advisor and yoga teacher alongside her admission duties for 11 years. Previously, Crouch worked at a boutique public relations firm specializing in crisis management in Washington, D.C. She serves as a seventh grade adviser.

Before coming to St. Mark’s in 2004, Marion earned her B.F.A. degree from the University of Oklahoma in theater performance and an M.L.A. degree from Southern Methodist University. A mom to two Marksmen (Michael Kirby ‘32 and Christopher Kirby ‘34), Glorioso-Kirby has served as Senior Class sponsor, and sponsored both the Improve Troupe and Fine Arts Board. She has taught drama in all three divisions, has led six international Choir tours to England and coordinates the School’s presence at the annual ISAS Fine Arts Festival. She received the John H. Murrell Excellence in Teaching Award and was a finalist for the Ralph. B. Rogers Award.

After being drafted by the National Football League and playing with the Dallas Cowboys and the San Diego Chargers, Sean Lissemore joined the St. Mark’s administrative team as athletic director in 2019. He earned his bachelor’s degree from the College of William and Mary and his master’s degree from Indiana University. A former collegiate football player at the College of William and Mary, he served as team captain and earned All-American honors. He was drafted into the NFL where he played for seven years, including three with the Dallas Cowboys. Sean founded and organized the Sean Lissemore Youth Football Camp, a free enrichment program for children in Dumont, N.J. and was named the San Diego Charger’s NFL Military Salute to Service nominee. Sean is a member of the National Interscholastic Athletic Administrators Association and is a Certified Athletic Administrator. He also serves as eighth grade class adviser.

Dr. Gabriela Reed has been a member of the St. Mark’s community since 2014. She is a licensed clinical psychologist and currently serves as the director of the Marksman Wellness Center. She earned her B.S. from Texas A&M University and Ph.D. from the University of Texas Southwestern Medical Center, where she served as chief resident. Dr. Reed completed her post-doctoral fellowship at Children’s Health and was a psychologist in the Department of Gastroenterology. She developed the Middle School Health and Wellness curriculum and teaches the seventh and eighth grade health and wellness classes.

Mark Sullivan joined the St. Mark's School of Texas faculty in 1982 as the Lower School Physical Education Coordinator. Prior to his appointment as the Director of Athletics and Physical Education in 2000, Mark has served the school as the Wilderness Program Director, the Assistant Head of the Middle School and as a coach and teacher in the Athletic Department. Mark holds a Bachelor of Science Degree and a Masters Degree in Educational Administration from the University of North Texas, and is a recipient of the John H. Murrell Excellence in Teaching Award. Mark's coaching has included numerous Middle School sports as well as the Varsity Volleyball team and the Varsity Diving team.