Our Team

Isa Felder – Brazilian, holds a Bachelor's Degree in Journalism from Universidade Federal Fluminense (UFF), in Rio de Janeiro, Brazil. A professional who has worked for over 20 years in the field of Communications both in Brazil and Switzerland. Isa also holds a certificate in the Pedagogical field from SVEB and has studied translation at the Schule für Angewandte Linguistik (SAL). Since then, she has worked as a language teacher, translator and proof-reader for several institutions in Switzerland. Isa is the President of the World Language School, and is responsible for PR. She also teaches German for beginners at WLS.

Nelson Adao – Nelson is originally from Angola, but spent his early childhood in France. His family moved to Switzerland when he was eleven. After graduating as a "Retail Sales Specialist", Nelson completed the "Adult Language Teaching" course at the Schule für Angewandte Linguistik - SAL, earning the SVEB Diploma. He teaches German and French at several Language Schools in Switzerland, as well as at the World Language School. He is also Vice President and Treasurer of WLS.

Andréa Vedovato Berchtold – Brazilian, holds a degree in Pedagogy from the Universidade Católica de Santos (UNISANTOS), São Paulo, Brazil. She also holds 2 Proficiency Certificates: TOEFL (Test of English as a Second Language) and Michigan (Proficiency Certificate issued by the University of Michigan – USA). Andréa has 18 years of experience as an English teacher, teaching students of all ages and levels and has also worked for 4 years as the Educational manager in 2 branches of a well-known language school chain in Brazil. Currently Andréa teaches English at the World Language School.

Simon Diethelm – Swiss, holds the Cambridge proficiency Diploma and DALF C2. A professional Teacher with work experience at various Schools in Zürich (Zürcher Hochschulamt since 2018). Studied intercultural Communications ICC at the pedagogic Institute PHZH in Zürich. Integrative and adaptive teaching experience as Crewmember of the historic Bark “Salomon” (Stiftung Jugendschiffe Schweiz). Member of the Teambuilding Department at Teambuilding Events “Kletterpark Gründenmoos” St. Gallen. A  teacher with a wide range of didactic and methodical experiences. A fluent speaker of German, English, French, Spanish and the universal language of Music. His favourite Quote:

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

WLS Team
Würzgrabenstrasse 6
8048, Zürich Altstetten
E-mail: info@wlanguageschool.com