About Us


The Montessori School of San Antonio is accredited by the Independent School Association of the Southwest. ISAS is an organization of 89 schools spread across Texas, New Mexico, Oklahoma, Arkansas, Kansas, and Louisiana. ISAS is recognized by the Texas Private School Accreditation Commission. Other local schools accredited by ISAS include San Antonio Academy, St. Luke’s, Saint Mary’s Hall, Keystone School, and TMI.

ISAS accreditation requires adherence to a set of rigorous standards of best practices of independent schools. Following a thorough self-study, an accreditation team composed of experts from other ISAS schools conducts a three-day visit every 10 years, scrutinizing every aspect of the school’s programs and operations. Documented responses to the recommendations of the visiting team are required at interim intervals.


MSSA Faculty & Staff


Emily Lund, Head of School
Theresa Powers, Program Director
Brandon Petrosky, Business Manager
Maru Galarza, Director of Admission
Chris Noel, Director of Communications
Jon Ollis, Director of Facilities
Leticia Obregon, Director of After School Programs & Athletics

Ben Hackett, Director of Parent Engagement
Cynthia Gonzalez, Information Technology
Becky Bazany, Nurse
Jule Metoyer, Admin Assistant
Elizabeth Holland, Bookkeeper
Jessica Harrison, Counselor

Teachers & Assistants


Cheri Sebring, Teacher
Judy Korge, Classroom Assistant
Angie Jones, Teacher
Kathleen Kapp, Classroom Assistant
Libby Brocard, Teacher
Julie Smith, Classroom Assistant
Lisa Fish, Teacher
Jimena Hastings, Classroom Assistant/Library Assistant
Julie Jacobsen-Espey, Teacher
Dany Salas, Classroom Assistant


Maria Flores, Teacher
Lynn Ortiz, Classroom Assistant
Teresa Treat, Teacher
Angela Updike, Classroom Assistant
Pranita Patel, Teacher
Reem Rashid, Classroom Assistant
Sumi Chaudhuri, Teacher
Donna Hengst, Classroom Assistant


John Pettit, Teacher
Kara Ralston, Classroom Assistant
Anne Shadle, Teacher
Judi Abbott, Classroom Assistant
Cassandra Treviño, Teacher
Lauren Talley, Classroom Assistant
Shannon Pettit, Teacher
Yvonne Pham, Classroom Assistant


Kathleen Darr, Science Teacher 
Shauna Cardenas, English Teacher
Josh Duelm, History Teacher
Karen DeMore, Math Teacher


Becca Morgan, Music Teacher
Michelle Taylor, Music Teacher
Leticia Obregon, PE Teacher
Brenda Estrada, PE Teacher
Louis Alvarado, PE Teacher
Lisa Christal, Librarian
Kristina Richards, Asst Librarian/Admission Asst
Margo McCarthy, Art Teacher 
Anabell Rosales, Spanish Teacher
Maria del Pilar Camelo, Spanish Teacher


Leticia Obregon, Director of After School Programs
Brenda Estrada, Coordinator of Athletics & Activities
Patty Escobedo, Childcare Coordinator
Sylvia Flores,  Childcare Instructor
Sandra Alvarado, Childcare Instructor
Nancy Alvarado, Childcare Instructor
Dany Salas, Childcare Instructor

MSSA Board of Trustees

With 11 members from a variety of professional backgrounds, but all with a common passion for MSSA and Montessori education, MSSA Board of Trustees meets regularly with Head of School Emily Lund and MSSA Business Manager, Brandon Petrosky. The primary work of the Board of Trustees is to ensure and protect the long-term welfare and interest of the school and its mission. Each Trustee holds office for one or two three-year terms, not to exceed six years. Specific committees outlined in the Board By-Laws allow members to focus on specific objectives. These committees include: Executive Committee, Finance Committee, Institutional Advancement Committee, Committee on Trustees and other committees created as needed (Security, Policy Review, Building, etc.). Board members include ten current parents—with 16 current students and  one alumni parent—with two MSSA graduates.

To ensure the institution remains financially strong for our children’s children and to preserve and actively support the school in the realization of its mission.


Bryan Mendenhall
Board Chair

Tim Biela
Board Vice Chair

Ben Newman
Institutional Advancement Chair

Lisa Vargas
Committee on Trustees Chair

Alex Nava
Treasurer/Finance Chair

Sarah Shakil

Board Members

Bellinda Conte

David Gibson

Monica Hall

Page Judson

Jennifer Yantis



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