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The Grand Duchy of Luxembourg is a small State in the heart of Europe; it is home to both Luxembourgers who routinely use the three languages Luxembourgish, French and German, and many foreign residents; there is also a large number of cross-border workers. The complexity and the uniqueness of the situation in terms of language resulted, in 1991, in the creation of the ‘Centre de Langues Luxembourg’ (CLL); legislation passed on 22 May 2009 turned this into the ‘Institut National des Langues’ (INL). The INL is a public administration under the authority of the Minister for Education, Children and Youth.

Our missions

As a centre for language learning, the INL:

  • provides language courses for adults in order to:
    • promote plurilingualism,
    • encourage integration and social cohesion,
    • improve employability;
  • promotes intercultural exchange through use of the languages taught;
  • offers adult literacy courses.

As an examination and certification centre, the INL:

  • certifies knowledge of the Luxembourgish language in respect of official diplomas and certificates in the Luxembourgish language;
  • organises international tests and examinations in foreign languages.

Language teaching

The INL offers classes for adults in eight languages: French – Luxembourgish – English – German – Spanish – Italian – Portuguese – Chinese.

The courses offered comprise:

  • general language courses for beginners and for the more advanced;
  • courses with a specific objective (e.g. business German, business English, German for lawyers, Italian in the Media);
  • training for teachers of Luxembourgish (‘Zertifikat Lëtzebuerger Sprooch a Kultur’ – ZLSK).

In 2014, the INL accepted more than 12,000 registrations from people from 130 different nationalities, and offered more than 55,000 hours of classes.

Language certification

The INL administers international language tests and examinations in conjunction with the Goethe-Institut, Cambridge University, theInstituto Cervantes, the Centre international d’études pédagogiques, theUniversità per Stranieri, Perugia and the Universidade de Lisboa.

  • German– Goethe Zertifikat – Test Deutsch als Fremdsprache;
  • English – Cambridge English Language Assessment – International English Language Testing System;
  • Spanish – Diplomas de Español como lengua extranjera;
  • French – Diplôme élémentaire/approfondi de la langue française – Test de Connaissance du Français;
  • Italian – Diploma della Lingua Italiana;
  • Portuguese – Diploma de Português Língua Estrangeira.

The INL is the national certification centre for official diplomas and certificats in the Luxembourguish language :

  • « Lëtzebuergesch als Friemsprooch »;
  • « Sproochentest Lëtzebuergesch » which must be passed by applicants for Luxembourgish nationality;
  • «  Zertifikat Lëtzebuerger Sprooch a Kultur” – ZLSK.

Our teaching staff

The INL team comprises more than 120 teachers who specialise in teaching foreign languages to adults: teachers – native-speaker teaching assistants – adult trainers – trainees.

Our locations

The INL currently offers courses in:

  • Luxembourg – Glacis: Chinese  – English – French – German – Italian – Luxembourgish – Portuguese – Spanish;
  • Mersch: English – French – German – Luxembourgish;
  • Belval: English – French –  German – Luxembourgish – Spanish.


Congé de la Pentecôte 30.05.2020 – 07.06.2020

Congé de la Pentecôte Pentecost holidays 30.05.2020 – 07.06.2020

Dir sidd drun interesséiert, als Lëtzebuergesch-Formateur an der Erwuessenebildung ze schaffen?

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INL courses will continue to be taught remotely until the end of the current semester. National and international tests and exams will be held starting on 11th May 2020.

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Les cours en e-learning seront maintenus jusqu’à la fin du semestre courant. Reprise des tests et examens nationaux et internationaux à partir du 11/05/2020.

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The INL will be closed until 3 May 2020 included

OFFICIAL GOVERNMENT NOTICE TO THE STUDENTS OF INSTITUT NATIONAL DES LANGUES Luxembourg, 2 April 2020     Sir / Madam, Due to the growing number of Covid-19 cases in Luxembourg, the government has decided that all activities in the education sector will be suspended from 16 March to 3 May 2020 inclusive. The following types […]

Fermeture au public jusqu’au 3 mai 2020 inclus ! Les cours à distance seront maintenus!

AVIS OFFICIEL DU GOUVERNEMENT AU PERSONNEL ENSEIGNANT  DE L’INSTITUT NATIONAL DES LANGUES Luxembourg, le 2 avril 2020     Madame, Monsieur, Face au nombre croissant de cas d’infections COVID-19 au Luxembourg, le gouvernement a décidé que toutes les activités dans le secteur scolaire et éducatif resteront suspendues jusqu’au 3 mai 2020 inclus. Les établissements scolaires […]

! UPDATE: Fermeture complète jusqu’au 19 avril 2020 inclus !

AVIS OFFICIEL DU GOUVERNEMENT AUX APPRENANTS DE L’INSTITUT NATIONAL DES LANGUES Luxembourg, le 18 mars 2020     Madame, Monsieur,   Face au nombre croissant de cas d’infection COVID-19 au Luxembourg, le gouvernement a décidé que toutes les activités dans le secteur scolaire et éducatif seront suspendues du 16 mars au 19 avril 2020 inclus. […]