Copyright © 2000 - 2018 by Montessori School of South Riding

(703) 327-9417 /   /   25152 ElK Lick Road , Chantilly, VA 20152

Carmen Arenas


Universidad Educares, Santiago-Chile
Early Childhood Education, 1987
Washington Montessori Institute, AMI Primary Diploma 1994
Head of School/Primary classroom Directress


Carmen taught at the Montessori School of Oakton for 11 years before opening her school in the South Riding area. All three of her boys attended a Montessori school for their primary and elementary years and she credits their leadership skills and independence to those early years! Carmen’s dedication to the Montessori philosophy is shown daily in the classroom. Carmen has opened MSSR doors to children in the autism spectrum with high aspirations that by having an inclusion model program at MSSR, other Montessori schools will do the same.


Carmen serves as an active member on the board of directors of The Montessori School of Oakton and The Middleburg Montessori School. 

Claudia Tello


Universidad Privada del Norte, Peru 
Business Administration, 1999


Claudia was born in Trujillo, Peru. She has a major in Business Administration and has worked in the mortgage/title field for over 10 years. Claudia brings with her the beautiful gift of the Spanish language, and her great experience in the business field. Claudia is also the mother of a 5 year old boy. She loves working with children, and her favorite activities are traveling and dancing. 

Mary Beth Foss


Afternoon Assistant


Mary Beth is a current college student through Liberty University's online program and is an early childhood education major. Mary Beth recently graduated High School in December 2014. As a former student of Carmen's, Mary Beth has seen the benefits of a Montessori Education and loves working with young children.