Directory

As holder of the Cecil H. & Ida Green Master Teaching Chair in Science, Mark Adame teaches classes in biology, AP biology and DNA science. He holds a bachelor’s degree from Texas A&M University and an M.A.T. from the University of Texas at Dallas. A member of the St. Mark’s community since 2007, he sponsors various clubs including the Cycling Club, the Anatomy Club and the Biology Club. Adame has led nine Pecos Wilderness trips and participated in four seventh and eighth grade campouts. He began his teaching career in 1996 in Little Rock, Arkansas as instructor of pre-AP biology and AP biology. Adame also taught in the Carrollton-Farmers Branch school district, where he was the lead science teacher for the district. A recipient of the John H. Murrell Excellence in Teaching Award, he has a minor planet (32379 Markadame) named for him.

The Rev. Dr. Stephen Kirkpatrick Arbogast serves as the school chaplain here. Arbogast, formerly a vice-president with Goldman Sachs, joined the Peace Corps to teach at the Institut National d’Économie, (I.N.E.) Université Nationale du Bénin in the République du Bénin. First a Jesuit and now an Episcopal priest, Arbogast’s taught everyone from pre-school children to retired adults: with the Groton School, Trinity School (NYC) and the National Cathedral School as well as with several Jesuit schools, including Georgetown Prep, Fordham Prep and the Loyola-Blakefield School. He’s also served in parishes such as Trinity Church Wall Street and St. Paul’s Chapel at Ground Zero. His research interests have long been to understand the relationship between religion and education with a focus on spiritual and ethical formation. He holds degrees from Yale, Harvard and the Perkins School of Theology (Southern Methodist University).

After a distinguished career in the military, which included stints as a cannon crewman, a military intelligence officer and several tours in Iraq and Afghanistan, Reyno Arredondo ’87 returned to his alma mater in 2017 as head wrestling coach. He earned his Bachelor of Science degree from the United States Military Academy at West Point and a Master of Arts degree from the University of Texas at Austin. During his military career he taught in the Department of Foreign Languages and Behavioral Sciences and Leadership, as well as serving as an associate athletic director in the Directorate of College Athletics, Army-West Point. At St. Mark’s he is also a physical education teacher for Middle and Upper School students, seventh grade baseball coach, seventh grade adviser and sponsors the Martial Arts Club. He’s an inductee in the Texas Wrestling Hall of Honor and was awarded three Bronze Stars and earned Airborne and Air Assault wings during his military service.

With more than 30 years experience as an educator, John Ashton serves the School as associate headmaster, a position to which he was appointed in 2015. He has held additional administrative and teaching positions at St. Mark’s (assistant head of Upper School, Wilderness director), Hockaday (head of Upper School) and various public schools in his home state of Indiana. Ashton first joined the St. Mark’s faculty as a member of the English Department in 1996, teaching sixth grade humanities, coaching three sports, serving as a trip leader in the Wilderness Program and managing student attendance. As the first director of the School’s Leadership & Ethics program, he played a crucial role in forming the foundation of the character education program here. He has also served as interim head of Upper School for two years.

A 1995 graduate of St. Mark’s, William Atkinson ’95 joined the faculty as a Humanities teacher before being appointed Head of Upper School. A participant in the Pecos Wilderness program, he is also an assistant varsity football football coach and assists with assorted Middle School sports. He holds bachelor’s and master’s degrees from Southern Methodist University. After graduating from St. Mark’s, Atkinson attended West Point for two years before pursuing a career in law enforcement, teaching situational awareness to elite military personnel around the world. An accomplished artist, his work is exhibited in professional art galleries on the east and west coasts and Europe.