Leadership Team

Isabell Weipert
Head of Secondary School

Isabell Weipert studied German and English to become a teacher. Upon graduation she took on a teaching position at a Language Immersion School in North Carolina/USA. In 2012, she joined Phorms Education as the founding Head of Primary School at Josef-Schwarz-Schule. From 2017 to mid-2019, Isabell Weipert worked as Head of Human Resources for Phorms in Baden-Württemberg and took over the management of our Secondary School from school year 2019/2020.


Marius Steies
Deputy Head of Secondary School

Marius Steies is a qualified secondary school teacher for Spanish and English with many years of experience as a teacher for German as a foreign language. In addition to various positions at different school forms in south-western Germany and in Berlin, he worked for five years at the Deutsche Schule Barranquilla, Colombia, where, apart from teaching, he was also appointed training coordinator, Head of the German Department and Deputy Head of School. Moreover, Marius Steies occasionally works as an instructor for the German Schools Abroad, reflecting his practical experience and the theoretical foundations of his Master's studies in "School Management". In September 2022, Marius Steies joined the management team of the Josef-Schwarz-Schule in the position of Deputy Head of Secondary.

Naomi Janssen
Coordinator of Arts and Music

Naomi Janssen studied Music at Huddersfield University, UK before completing her teaching qualifications at Durham University in 2003. She completed her Masters of Education with a focus on bilingual education at the University of Bath in 2014. Naomi Janssen worked as Head of Music at a secondary school in County Durham before leaving the UK in 2009, working at an international primary school in Dubai, and then joining the Phorms family as a Music teacher at Campus München in 2010. Naomi joined the Josef-Schwarz-Schule in 2017, and since September 2019 has been part of the Secondary Leadership Team, being responsible for bilingual learning and the arts subjects. Outside of school, Naomi Janssen is a mum, cook, and keen gardener.

Mirjam Eckert
Coordinator MINT subjects

Mirjam Eckert studied English, Biology and Mathematics at the Ludwigsburg University of Education. From September 2010 to July 2012, she taught as a class teacher at an independently managed comprehensive school in Künzelsau. From September 2012, she worked at a state-run comprehensive school. As part of the school leadership team, she actively participated in processes of school and teaching development. Since September 2019, she has been an enrichment to the team of the Josef-Schwarz-Schule, where she is responsible for the coordination of MINT subjects within the leadership team.

Delphine Sack
Coordinator Foreign Languages

Delphine Sack is a trained teacher for English and French. She completed her secondary school teaching studies at the Sorbonne University in Paris in 2000. She worked on her master thesis in Political Sciences in the US and London and started her career as a high school language teacher in 2001. She worked for many years at various public and private bilingual schools in France, China, Hungary and Germany. In September 2017 she joined the Josef-Schwarz-Schule. Since the school year 2019/20, she has been a member of the leadership team and is responsible for the Foreign Languages Department. Besides her work at the school, she writes books for young people, maintains her language skills and manages her family.

Charles Spark
Coordinator German and Humanities

Charles Spark studied High School Teaching at the Ruprecht Karls University in Heidelberg, where he studied the subjects Chemistry, History and Geography. He completed his traineeship at a state school in Heidenheim an der Brenz, where his bilingual upbringing enabled him to teach in English and German. Here, he worked for another year, teaching English, BNT, Geography and History. Since 2021, Charles has been working as a teacher for Maths, NwT, History, Geography and Media Education at the Josef-Schwarz-Schule and has been a member of the leadership team since 2022. As a member of this team, he is responsible for the coordination of the German department and all Humanities.

Julian Nehr
Head of After School Program

Julian Nehr studied Social Pedagogy at the DHBW Stuttgart and worked there at the Centre for Intercultural Competence in the area of exchange programmes and public relations. In his professional career he worked in a psychiatry, the general social service of the youth welfare office and, an inpatient residential group. He is also studying Human Resources Management at the University of Applied Sciences, Technology, Business and Design in Wismar. Since December 2019, he has been Head of After School Program for the clubs, holiday programs and cooperation with external partners at the Josef-Schwarz-Schule.