Mr. Tim Heisler received his BA in International Studies from George Mason in 1994 and started working at Seton in 1995. He received his MA in International Commerce and Policy from George Mason in 1998. He teaches at Seton as a Child of God; his main purpose is to bring this reality everywhere and to every student with whom he comes in contact; no matter what accolades they receive later in life that none will hold a candle to that simple statement: “You are a Child of God!”

Mrs. Tina McIntyre received her MS in Information Systems at George Washington University and her BBA in International Business with minors in Spanish and Economics at James Madison University. In her own words, “It is such a blessing for me to be part of the Seton community where God always comes first and the Truth is proclaimed everywhere. In this school, God gives me the grace each day to grow in faith and holiness and the ability to share His gifts with all those around me.”

Mrs. Julie Mantooth holds a B.A. in Economics and Government from Smith College and a J.D. from DePaul University College of Law. A former assistant states attorney, Julie and her husband, Mark, have seven children who are either Seton graduates, current students, or future students. She held a variety of volunteer leadership positions at Seton before assuming her current role in Admissions in 2018. She delights in working with prospective families, the Admissions Committee, and the entire Guidance Department. Julie feels especially blessed to serve the Seton community in her Admissions position and to sanctify her work in such a joyful, faith-filled, and enjoyable environment.

Dr. Beth Carpenter received her PhD in Emerging Infectious Diseases at the Uniformed Service University of the Health Science in Bethesda, MD. She received her BS in Biochemistry at The Catholic University of America in Washington, DC. She is an Associate Adjunct Professor at the University of Maryland University College in Adelphi, MD since 2012. In her own words: “I have had an interest in science and nature from the time I was little. My favorite questions were “why” and “what is that”. It was not surprising that I went to school to pursue a degree in science. CUA was my first foray into a Catholic school, and I loved that it was a place where the faith was used to enlighten and inspire our studies. It was there that I came to appreciate the harmony that can be found between what we know by faith and what we know by reason. Science and religion are not at odds with one another! My work in graduate school with microorganisms continued to have me marvel at creation. The dedication in my doctoral thesis reads “To the good God, who saw fit to give humankind both heart and mind to know Him and His creation, may this work be pleasing unto You”, and it the perfect summary for how I approach science education. It is my desire to help my students not just learn chemistry but to appreciate how scientific knowledge can draw us closer to our Lord.”

Mr. John Robert DiVietri received his Associate’s Degree from NOVA in Social Studies and his BS in Psychology at Old Dominion University. He is currently working towards his MA in American History at the American Public University. In his own words: I feel very blessed to be teaching at Seton School. As a former Seton student, I know that this is a truly special school with a great student body. I am learning more about myself and my subjects the more I teach the amazing students that Seton has. I hope to be able to share some of the knowledge and faith that I have acquired with them for as long as I am able.

Mr. Richard Pennefather has been teaching at Seton for 30 years. He came to Seton after graduating from Providence College and thought it would be fun to teach and coach for a couple of years. He loves the challenge of working with kids, both academically and athletically. It is a joy for him and he hope to do it for another 30 years.

Mrs. Vickie Zadnik holds her BS degree in Electrical Engineering from VA Tech and her MSEE from GA Tech.  She has taught at the college level for several years and is currently an adjunct instructor with Northern VA Community College.  Vickie has a love for math and a desire to help others develop their own appreciation of it.  “Prayer is how we communicate and come to know God.  Math is how we communicate and come to know God’s amazing creation.  It is a tool that allows us to explain what is happening in the world around us and better understand how we can interact with it.  God’s creation is not random but ordered, intricate, and always unfolding”.  Vickie also holds a Master Catechist Certification from the Diocese of Arlington.  She is blessed to be at Seton, a place where the Holy Spirit abounds.