About Us

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Licenses and Certifications

Maryland State Board of Education

Certificate of Approval to operate a nonpublic Montessori educational program: Nursery School and Kindergarten

Maryland Department of Human Services

Licensed Child Care Center

Montgomery County Health and Human Services

Private Educational Institution License

Montessori Schools of Maryland

Certificate of Recognition

Validated Montessori School

Meet Our Staff


Martha Pollack Lange

Martha realized her long time goal of opening Rock Creek Montessori School in 2002. She began as a parent of a Montessori student in 1978 and the next year took the AMI Elementary Training at the Washington Montessori Institute (WMI). After teaching on that level for 5 years, she then went back to WMI for the Primary Training in order to start a school. Sixteen years later, Martha was finally able to secure a location for the school.

Currently, Martha resides in San Francisco but is committed to keeping Rock Creek Montessori School a place where children happily develop themselves in a well prepared orthodox Montessori environment.

Administrative Staff

Debra Mallory is our Administrative Head of School. She is the go-to person for any and all questions or school needs.

Mindy Carlson is our Director of Admissions. She is in charge of handling our application and enrollment processes as well as promoting the school in general. Both of her sons attended Rock Creek Montessori School. She received her BS from Iowa State University and her Masters of Science in Organization Development from American University.

Teaching Staff

Fumiyo Hashida, Primary Teacher and School Director, has a bachelor’s degree in Early Childhood Education from Washington Adventist University, an associate’s degree from Japan in physical education and a Primary/Assistance to Infancy AMI Montessori diploma. She came to this country to study dance. For four years, she worked at a DC charter school for the arts as an instructional assistant. She has previous experience working as a Primary assistant and Toddler Teacher at Rock Creek Montessori School.

Megawati "Megan" Tjokro, Primary Teacher, has a bachelor's degree in Early Childhood Education with a minor in Psychology from Charter Oak State College of Connecticut, a Primary AMI Montessori diploma, and a Master's of Education from Loyola University of Maryland. She has previous experience working as a Primary Assistant Teacher at Springmont Montessori School in Atlanta, GA and 10+ years of experience in Early Childhood Education.

Debra Mallory, Toddler Class Teacher, is a graduate of the Infant and Toddler Program at the Institute for Advanced Montessori Studies in Silver Spring. As a new mother, Debra decided to make a career change from government administrative work to teaching after learning about Montessori’s philosophy during a visit to a school. Debra grew up in Maryland, received her BA in government and politics from the University of Maryland at College Park. She currently resides in Silver Spring with her husband and son.

Mary Evans is a Primary Class Assistant and is in charge of our after school program. Mary took two years of child development classes in high school and has completed the AMI Montessori Assistants Training. Her other profession is as a costumer for local theatre companies. She grew up in the area.


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