Our Team

Isa Felder

Isa Felder – Brazilian, graduated in Journalism from the Federal Fluminense University (UFF), she has worked for over 20 years in various media outlets in both Brazil and Switzerland. Isa obtained the SVEB Diploma to work in the pedagogical area, as well as the Translator Diploma from Schule für Angewandte Linguistik – SAL. Since then, Isa has worked as a language teacher, translator, and proofreader for several institutions in Switzerland. In addition, she serves as president of the World Language School – WLS, as well as the company’s public relations officer. Isa also teaches German for beginners at WLS.

Nelson Adao

Nelson Adao – Although born in Angola, Nelson spent his childhood in France. When he was eleven, he and his family moved to Switzerland. After graduating as a "retail sales specialist," Nelson completed the "adult language teaching" course at Schule für Angewandte Linguistik – SAL, earning the SVEB diploma. He currently works as a German and French teacher at various language schools in Switzerland, including World Language School. He is also vice-president and treasurer of WLS.

Simon Diethelm

Simon Diethelm – Swiss, holds the Cambridge Proficiency Diploma and the DALF C2 (Diplôme Approfondi de Langue Française). A professional with experience in various schools in Zurich (Zürcher Hochschulamt since 2018). He studied Intercultural Communication ICC at the PHZH Pedagogical Institute in Zurich. He gained teaching experience in the integrative and adaptive field as a crew member of the historic boat "Salomon," supported by the "Stiftung Jugendschiffe Schweiz." Simon is a member of the "Team Building" department at the collective events of "Kletterpark Gründenmoos" in St. Gallen. A teacher with a wide range of didactic and methodological experience. He speaks fluent German, English, French, Spanish, and the universal language of music. His favorite quote:

"Language is the roadmap of a culture. It tells you where its people come from and where they are going." – Rita Mae Brown