Leadership Team

Ralf Schönborn
Head of Primary School

After many years in school leadership roles at different schools in both Germany and the USA, Ralf Schönborn started at our JSS as a leadership team member in October 2021. He then took over the position of primary school headmaster at both sites on 1 December last year. Ralf studied social pedagogy and worked in a youth home. His two now big "children", Marie and Frederik, in a way live the same spread as Ralf himself: one leg firmly in Germany (Frederik), the other, at least emotionally, in the USA (Marie). He feels that being allowed to work at the JSS is like winning the lottery.

Lena Dudenhöffer
Temporary Head of Primary School

Lena Dudenhöffer completed her primary school education studies at the University of Landau in 2014 with a focus on German and Protestant theology and has been working as a teacher since then. Since moving to Heilbronn in 2017, Lena has been working in our team at Josef-Schwarz-Schule as a specialist teacher of German and in the area of cooperation with the day care centres run by Phorms Education. In school year 2018/19, she was a member of the leadership team responsible for the team of subject teachers and the German department at JSS. 

Lena Dudenhöffer is currently on parental leave.

Abigail Cossettini
Deputy Head of Primary School

Abigail Cossettini is a university trained teacher with a specialty in Gifted Education. She was a class teacher in public and bilingual schools in the US for 7 years before joining the Josef-Schwarz School in 2012. At Josef-Schwarz School, she has taught in the Reception, 1st grade and 2nd grade, as well as being a part of the school Leadership Team and working as the Talent Coach. 
Abigail Cossettini is currently on parental leave.

Daniela Hennig
Reception Coordinator

Daniela is a trained Kindergarten teacher and studied Early Childhood Education at the Ludwigsburg Teachers’s College.  After finishing her Bachelor’s degree she worked in Kindergartens in the Heilbronn area.  In September 2012 Daniela started working for Josef-Schwarz-School. She began as a Reception teacher and later she took over as the Co-ordinator of the Reception programme.

Lisa Schüfer
Head of Primary School

Lisa Schüfer studied German, Math and Catholic Religion in Ludwigsburg at the University of Education. As a native to Neckarsulm, she enriches the Josef-Schwarz-School Team since 2013. In 2015 she became a member of the Leadership Team and is responsible for all subject teachers and the German department. Beginning in January of 2017 she initially took over the temporary position as Head of the Primary School and is now Head of Primary School.

Lisa Schüfer is currently on parental leave.

Verena Schneiders
Coordinator subject teacher

Verena Schneiders is a trained primary school teacher. After graduating from high school, she did a voluntary social year and then studied at the University of Education in Heidelberg. She completed her traineeship at a primary school in the Rhein-Neckar district in 2018. After a one-year excursion to a SBBZ with a special focus on learning, she has been working as a German teacher at the Josef Schwarz School since the 2020/2021 school year. As of the new school year, she will be responsible for the subject teacher team and the German department at the Josef-Schwarz-Schule as a member of the leadership team. 


Tina Klassen  
Talent Coach

Tina Klassen is a trained primary and middle school teacher with a master’s degree in education, certified to work in Canada and the United States.  She has spent her career traveling the world to diversify her teaching experience. She joined the JSS team in 2015, teaching in grades three and four. In addition to her work as a class teacher and in the school management team, she also takes on the role of talent coach. 


Karin Frank
Coordinator for After School

Karin Frank completed training as an educator and movement therapist. After many years of running an open children and youth ward, she joined the JSS team in 2015. Since 2019, Karin has been the After School Coordinator, managing the entire area of afternoon and holiday care and coordinating the team of assistant teachers.


  • Leadership-Team Primary School

  • School Coaches Primary School