1986
The first Interlangues school was founded in La Chaux-de-Fonds, Switzerland by Jean – Daniel Tschan.
Jean-Pascal Janin then opened Interlangues schools in Lausanne and Yverdon-les-Bains
1987
Interlangues in Neuchâtel opened
1996
Interlangues in Soleure opened
1999
Interlangues in Bienne opened
2004
Interlangues certified eduQua
2005
Interlangues in Langenthal opened
2006
The first ECOLE PLUS school in Neuchâtel opened
2007
ECOLE PLUS in La Chaux- de-Fonds opened
2009
ECOLE PLUS in Bienne opened
2010
eduQua certificate successfully renewed
2012
Certified as a Cambridge exam preparation centre
2013
eduQua certificate successfully renewed