GERMAN SATURDAY SCHOOL BOSTON
German Language Education for more than 150 years
Administration
Our leadership team is composed of our Principal and Vice Principal (Academics) as well as the School Committee, consisting of currently nine members. They work in tandem to uphold our mission of immersing students from diverse ethnic and linguistic backgrounds in the cultures of German speaking countries, thereby fostering their appreciation of global citizenship
Academic Leadership
The Principal leads the faculty at the German Saturday School Boston and is responsible for developing and overseeing the curriculum. She is supported by the Vice Principal.
School Committee
Our all-volunteer School Committee sets forth the school mission and policies, and manages all aspects of its operations. It reports regularly to its authorizing body, the Boylston Schul-Verein in Walpole, MA.
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School Committee members are typically parents of students and can remain on the committee for a maximum of two terms of three years each. While the committee collectively works together on general school policies, each committee member has been assigned to specific work areas.
The School Committee members for the 2025/2026 school year are:
Chair
Michael Sassin
Michael joined GSSB with two children in 2016 and has been volunteering for the IT before starting as Vice Chair in 2025. He became Chair in 2026.
Marketing & Communication
Leona Frank
Leona joined GSSB in 2024 and has been volunteering in the Events and Communications team. Leona started as Marketing & Communication liaison in 2026.
Library
Steffi Harrison
Steffi joined GSSB in 2016 and has three children attending GSSB. She has been volunteering in the Kaffee-Ecke (coffee corner) and started as library liaison in 2025.
Events
Gerhard Walker
Gerhard joined GSSB with two children in 2022 and has volunteering in the Events Team since then. Gerhard started as Events liaison in 2025. ​​​
Member at Large
Stephan Richter
Stephan joined GSSB with two children in 2013 and has been volunteering in the library and was the library liaison 2021-2025.
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Parent Helper Coordinator
Dr. Inga Claudia Wienhöfer-Simard
Inga joined GSSB with in 2019 with two children and has been volunteering as room parent. Inga started as Parent Helper Coordinator in 2023.
Finances
Achim Wechsung
Achim joined GSSB in 2021 when his son started in first grade. Now, both his kids attend. In 2026 Achim became Treasurer after volunteering in multiple other roles.
Information Technology / Registrar
Oskar Senft
Oskar joined GSSB with two children in 2020 and has been volunteering for the IT team since then. Oskar started as IT liaison in 2025.
Member at Large
Dr. James Downs
James joined the GSSB with two children in 2021 and was the Events liaison 2022-2025.
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Staff
Front Desk Manager
Yvonne Case
Yvonne has been involved in GSSB since 1998. Her four daughters have graduated from the GSSB, and her 3 sons are currently enrolled at the school.
Her previous experience at the school includes various substitute teaching assigments as well as parent volunteering. Yvonne is originally from Bern, Switzerland, and immigrated to the US in 1986.
In her current position, Yvonne is responsible for setting up and running the front desk. She is the point person for teachers, students, parents and visitors.
Assistant to the Principal
Daniela Mrozinski
Daniela joined the GSSB community two years ago shortly after she moved with her family from Germany to the US. While helping out in various classrooms, she also joined the administration team to assist Claudia Bonmassar with administrative tasks and support Yvonne at the front desk every Saturday.
In Germany, she has worked in an accounting department and additionally taught French in several kindergartens.
Since 2019 she teaches her own class at the German Saturday School Boston.
Controller
Irina Mavrodieva
Irina Mavrodieva administers the registration and financial operations at GSSB. She holds advanced degrees in Accounting and Business Administration from Northeastern University, and is a licensed CPA in the state of Massachusetts. Prior to joining the school, she has worked in the financial sector for 16 years focusing on audit and financial reporting. Besides working in the administration, Irina is also a GSSB parent.
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