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Language certificates

Studies? New job? Personal challenge? Do you need a certificate to confirm your language skills in a foreign language? 

With our help, you will become “fluent” in your new life plans.

The INLL organises international language tests and examinations in cooperation with: the Goethe-Institut, the TestDaf Institut, Cambridge English Language Assessment, the British Council, Instituto Cervantes, France Education International, Università per Stranieri di Perugia, Universidade de Lisboa.

Overview of language certificates offered

There are many certification bodies that can attest language skills. We organise language tests for different European languages in cooperation with the relevant national institution concerned.


LaF – Lëtzebuergesch als Friemsprooch

The Lëtzebuergesch als Friemsprooch (LaF) diploma is a national certificate  for candidates who have learned Lëtzebuergesch as a foreign language. The levels offered correspond to levels A2 to C1 of the Common European Framework of Reference for Languages (CEFR). The examinations are based on a communicative approach and assess language skills. The diploma can be useful for professional purposes.

The LAF diploma is independent of the language courses. 

It is therefore not necessary to enrol in a Luxembourg language course beforehand. For each level, four skills are tested: oral production, written production, oral (listening) comprehension and written comprehension.

It is not necessary to register for all four skills if you are only interested in the certification of certain skills or in certain areas.

Successfull completion: To successfully complete a skill, the candidate must obtain 60% of the points. (Law of 8 March 2023 establishing the Institut national des langues Luxembourg, Article 8, paragraph 4)

To get an idea of the different levels, you can consult the following documents: 


The Sproochentest is the language test that allows you to obtain Luxembourg nationality. The required levels are A2 in speaking and B1 in listening.

Good to know: The Sproochentest is independent of the language courses. It is therefore not necessary to enrol in a Luxembourg language course beforehand.


Diplôme élémentaire de la langue française (DELF Niveaux A1, A2, B1, B2)

Offered Levels DELF A1, DELF A2, DELF B1, DELF B2

To the official website

Diplôme approfondi de la langue française (DALF Niveau C1)

Offered Level DALF C1

To the official website

Test de connaissance du français (TCF, Niveaux A1-C2)

Offered Levels A1/A2/B1/B2/C1/C2

To the official website


Cambridge English Language Assessment (PET, FCE, CAE, CPE, Niveaux A2-C2)

Immigration and education
Improving employability

To the official website

International English Language Testing System (IELTS, Niveaux A1-C2)

Registration for English universities and immigration to English-speaking countries
2 types of tests: IELTS Academic and IELTS Training

To the official website


Goethe Zertifikat (Levels A2, B1, B2, C1)

Offered Levels A2, B1, B2, C1 

To the official website

Test Deutsch als Fremdsprache (TestDaF, Levels B2 + C1)

From 2023 onwards, digital version only

To the official website


Diplomas de Español como lengua extranjera (DELE, Levels A1-C2)

To the official website


Diploma della Lingua Italiana (CELI, Levels A1-C2)

To the official website


Diploma de Português Língua Estrangeira (ACESSO-DUPLE, Levels A1-C2)

To the official website