Head of School

Children’s House South Guide

Natia Meehan serves as Principal of Siena Academy, the parish school of Saint Catherine of Siena and the only diocesan Montessori school in the Arlington Diocese. She holds a Master’s degree in Education from Loyola University and a Bachelor’s degree in Theology from Christendom College.

An AMI-certified Montessori educator for ages 0–3 and 3–6, Natia has over 35 years of experience in Montessori classrooms and atria. She is also a Catechesis of the Good Shepherd catechist for all three levels and a Formation Leader. Since joining Siena Academy in 2007, she has served in multiple roles, including Primary Guide, catechist, and parent educator. In addition to her role as Principal, Natia continues to work directly with children in the classroom, reflecting her deep commitment to Montessori education and formation.

Director of Admissions and Administration

 Kim Livaudais serves as the Director of Admissions and Administration at Siena Academy. She holds a degree in Elementary Education from the University of Virginia and has experience teaching, homeschooling, and parish leadership. Kim has been part of the Siena community since 2010 and is dedicated to supporting families and the school’s mission. She enjoys spending time with her husband, children, and grandchildren, as well as cooking, reading, and traveling.

Elementary Guide

Elementary Academic Support

Christine Chambers serves as the Elementary Academic Support Specialist at Siena Academy. She holds a degree in English Literature and is a certified Dyslexia Academic Therapist. Christine is also trained in Catechesis of the Good Shepherd Level I and has completed AMI 6–12 Orientation training. As a longtime Montessori parent, she brings both professional expertise and personal experience to her work supporting students.

Elementary Assistant

Elementary Catechist

 Jennifer Gregory Miller has a long-standing love for both Montessori education and the Catechesis of the Good Shepherd. She is certified in all CGS levels and has over 15 years of experience working with children, especially at the Elementary level. She recently completed her AMI Primary Diploma through the Washington Montessori Institute. Jennifer holds a B.A. in History with a minor in Sacred Music from Franciscan University of Steubenville and is the creator of the Liturgical Year section on CatholicCulture.org. She lives in Manassas with her husband and two sons and enjoys reading and working with her hands through various crafts.

Toddler Guide

Trish Hogan has been a part of Siena Academy since its founding in 2004. She began as the primary directress of Children’s House South before establishing and leading the Toddler Program in 2007, where she continues to serve. Trish also leads Child-Parent classes and, most recently, completed additional training through Montessori Medical Partnership for Inclusion. She now also serves as the directress of Siena’s Children’s Cottage Program, supporting children with diverse needs.

Toddler Assistant

Children's House North Guide

Mariah Martin earned her degree in Elementary Education with a minor in Art from Benedictine College. She is currently pursuing her AMI Primary training at the Washington Montessori Institute. Mariah enjoys working with children and expresses her creativity through art, as well as spending time outdoors and running.

Children's House North Assistant

Children’s House North Catechist

Children’s House South Catechist

 Stefanie Austin has served as a catechist in Children’s House South since 2022. She earned her degree from Ave Maria University, where she also received her Catechesis of the Good Shepherd training. Stefanie brings a joyful love for working with young children and is currently continuing her formation through AMI Primary training at the Washington Montessori Institute.

Children’s House South Assistant

 Tian Rulona is a graduate of George Mason University, where she studied neuroscience and music. Before joining Siena Academy in 2023, she worked in Catholic education and spent time in religious formation. Tian brings a peaceful and joyful presence to the classroom and values the opportunity to work closely with both children and colleagues. She enjoys reading, spending time outdoors, and being with loved ones.

Administrative Assistant/Substitute

Children’s House Outdoor Environment Assistant

Jackie has a background in public education and has worked with children of all ages in a variety of settings. She holds a bachelor’s degree in history and anthropology and enjoys bringing history to life through hands-on experiences. Since her teenage years, she has volunteered and worked with children through activities such as horseback riding programs, farm-based learning, and children’s choirs. Jackie brings a love of gardening, outdoor learning, and experiential education to Siena Academy, along with Level I training in Catechesis of the Good Shepherd.

Classroom Care Assistant