Our Mission and History


Greene Towne Montessori School, located in Center City, Philadelphia, is dedicated to providing a stimulating learning environment for children ages 18 months to 6 years, consistent with the values and principles developed by Dr. Maria Montessori. Greene Towne’s curriculum is designed to develop each child’s full human potential – emotionally, physically, intellectually, and socially – and to foster a life-long love of learning. Greene Towne’s programs aim to meet the diverse needs of the children and families we serve.


Greene Towne was founded by a small group of families dedicated to the Montessori method, lead to the charge by Portia and Otto Sperr. Doors opened in the fall of 1966 at Saint Clement's Church with the goal to have a "racially, religiously, and economically integrated school."  


In the fall of 2001, after 35 years leasing space in Saint Clement's Church, Greene Towne moved to what is now our East campus on Arch Street in a century-old building designed for us by architect Ed Bronstein.  In the fall of 2008, we opened our West campus on Croskey Street.

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2121 Arch Street

Philadelphia, PA 19103


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Our Community

The GTMS Parent Association

Diversity at GTMS

50 Years of Greene Towne

GTMS Board of Trustees


Our Strategic Plan

Click below to read the summary of our Strategic Plan, 2015.

Strategic Plan 

Our Staff and Faculty


Sarah Sweeney-Denham, Head of School

Jennifer Coulter, Montessori Director and Dean of Faculty

Eileen Doyle, Administrative Assistant-East

Vishica Gwendolen, Administrative Assistant-West
Christina Schweingruber, PM Administrative Assistant-West

Bonnie Clark, Director of Development

Erika Goldberg, Director of Enrollment Management and Constituent Relations

Joanna  Hutchinson, Business Manager

Nicole Leapheart, Director of Communications and Marketing

Lisa Dissinger, Child Psychologist

David Hudson, Director of Facilities


Auxiliary Staff                  

Danielle Landy, AM Auxiliary Assistant
James Esposito, PM Auxiliary Assistant

Primary School

Katie Brown, Primary Lead Teacher (Prestas)
Anna Matsukevich, Primary Lead Teacher, Primary Coordinator

Jean Prestas, Primary Lead Teacher (Brown)
Jen Wollman, Primary Lead Teacher

Johanna Wood, Primary Lead Teacher


Erin Buonadonna, Primary Assistant (Matsukevich)

Justin Donner, Primary Assistant  (Wollman)

Gina Kalesse, Primary Assistant (Wood)


Primary All Day Montessori (ADM)                         

Brandon Och, ADM Primary Lead Teacher 

Eunhee Roberts, ADM Primary Assistant 

​Alex Ball, ADM Art Enrichment

Jamie Peteraf, ADM Primary Lead Teacher (PM) 
Diana Mousetis, ADM Primary Assistant (PM)

Allison Weidman, ADM Primary Assistant (PM)


John Broomall, Music Enrichment Teacher

Emily Grant, Art Enrichment Teacher

Talia Mason, Movement/Enrichment Teacher


Toddler House 

Desiree McNeill, Toddler Lead Teacher (Older Toddlers)
Cherise Sistrunk, Toddler Lead Teacher
Patrick Sutch, Toddler Lead Teacher


Patty Bebee-Wilson, Toddler Assistant (Sistrunk)

Alexis Crum, Toddler Assistant (Sistrunk)

Abigail Ege, Toddler Assistant (McNeill)
Julian Freedman, Toddler Assistant (Sutch)
Yvonne Jones, Toddler Assistant (Sutch)


Toddler House All Day Montessori (ADM)

Michelle Nowacky, ADM Toddler Lead Teacher/Toddler Coordinator

Dominique Wells, ADM Toddler Lead Teacher (PM)
Sydney Rotter, ADM Toddler Assistant 

Qays Luke, ADM Toddler Assistant (PM)

Jasmine Whitt, ADM Toddler Assistant (PM)


Toddler Lunch Coordinator

Chef Kim Siegel