Guide

The Sproochentest, in detail

What the Luxembourgish language exam actually contains: the two tests, the eight speaking criteria, the 50% rule and compensation, registration and exam day. Written from information published by the INL, the Ministère de la Justice and guichet.lu.

Page updated 3 September 2026.

Adult education lecture room with candidates seated in rows

What the Sproochentest is for

The Sproochentest is the Luxembourgish language exam required of candidates for naturalisation. It follows from the amended law of 8 March 2017 on Luxembourg nationality, which makes acquiring nationality conditional on proving a knowledge of Luxembourgish.

It is run by the Institut national des langues Luxembourg (INL). According to information published by the INL, the resulting certificate has no time limit: once you pass, you do not have to sit it again.

The exam does not measure general Luxembourgish. It measures two specific skills at two different levels: speaking at A2 and listening comprehension at B1. There is no reading, no writing and no grammar paper.

Test 1 — Speaking (Ausdrock), level A2

The speaking test lasts around ten minutes and takes place in front of two examiners. It has two parts of roughly five minutes each.

1. The interview

An examiner interviews you on a topic you choose from two options. Topics come from a bank of everyday subjects: work and profession, training, family, friends, leisure, food and drink, media, travel and holidays, languages, housing.

It is not a monologue: the examiner follows up, asks for detail, comes back to something you have just said. Reacting is part of the mark.

2. Describing a picture

You are shown three pictures; you pick one and describe it. What is expected is a simple but structured description: who, where, what, and what the scene suggests to you. Describing five elements in full sentences is worth more than listing twenty isolated words.

The eight speaking criteria

Speaking is assessed on the spot by the two examiners against a grid of criteria. Here is that grid, with what each item actually looks at.

Speaking assessment grid — criteria as published in French.
#CriterionWhat is being observed
1Répertoire — repertoireThe range of vocabulary you use and how well it fits the topic.
2Utilisation des structures grammaticales de base — basic grammatical structuresElementary forms: word order, present and perfect tenses, case after prepositions.
3Fluidité — fluencyDelivery, hesitation, the length of your pauses.
4Clarté — clarityPronunciation and articulation, how cleanly sounds come out.
5Accomplissement des tâches — completion of the tasksDoing what was asked: answering the actual question, describing the picture, saying enough.
6Cohérence — coherenceHow ideas follow each other and how you connect them.
7Capacité à se faire comprendre — making yourself understoodWhether the listener understands without having to ask you to repeat.
8InteractionResponding to follow-ups, holding an exchange rather than reciting.

LetzTest uses exactly this grid to mark your recordings: each criterion out of 5, with a comment and examples taken from what you said. These are practice estimates, not exam marks.

Test 2 — Listening comprehension (Héierverständnis), level B1

The second test covers comprehension and is taken on a tablet. It uses three audio documents, in this order:

  1. A radio news item — fast delivery, figures, place names.
  2. A conversation between two people — everyday language, overlapping speech, informal expressions.
  3. An exchange or a talk on a defined topic — more structured, longer.

After each recording you answer a multiple-choice questionnaire. The stated duration varies between public sources: the INL gives 35 minutes for this test, while other public sources mention around 25 minutes. Allow half an hour and check the exact duration on your invitation.

The trap is not vocabulary — it is speed. B1 listening means the document is delivered at natural pace. Training at real speed, not slowed down, is the best preparation.

The 50% rule and compensation

The rule is simple, and worth knowing from day one of your preparation:

  • You pass if you obtain at least half the points in the speaking test.
  • If your speaking mark falls below half, it can be compensated by the listening mark: the exam counts as passed if the average of the two tests reaches at least 50%.

In other words: speaking is the decisive test, but a strong listening score can rescue a speaking mark just under the threshold. That is why neither can be neglected — and why LetzTest always shows both estimates, with a "compensation possible" or "compensation insufficient" status.

Registering for the exam

Registration is handled by the INL only, online, through the MyINL platform (myinl.inll.lu). LetzTest does not register anyone for the exam and has no access to sessions.

  • Registration fee: €75, an amount set by Grand-Ducal regulation according to information published by the INL. Check the current amount when you register.
  • Places: the INL states that more than 800 places are released every month, and that they are taken very quickly. Sessions are not all published at once: new dates are added regularly.
  • Exam sites: the INL lists two, Luxembourg-Glacis and Belval.
  • Number of attempts: the INL states there is no limit to how many times you may apply, but you must wait for the result of the previous session before registering again.
  • No-show or withdrawal: according to the INL, a candidate who withdraws without valid reason or fails to appear is not refunded and has to register again.

In practice: check the registration platform several times a week rather than once a month, and start preparing before you have a date. Candidates who wait for their invitation before getting to work rarely have as much time as they imagined.

On the day

Bring valid identification. The INL accepts, among others, a foreign passport, an identity card, a refugee or stateless person’s travel document, a residence permit or an immigration certificate. Bring the document you registered with; a photocopy is not enough.

A few practical points:

  • Arrive early: both exam sites need time for access and seating.
  • You do not choose your examiner or the order of the tests; follow your invitation.
  • For the picture task, pick the image you can describe, not the one you like most.
  • If you go blank, say so in Luxembourgish and rephrase. Silence costs more than an imperfect sentence: the criteria reward making yourself understood and interacting.
  • If you need an accommodation for a certified disability, the INL states that it provides the material facilities and/or personal assistance required. Request it from the INL in advance.

Preparing in a way that pays off

Three mistakes come up again and again among candidates who fall just short:

  1. Working on the language in general rather than on the exam. The format is very specific. Practising without reproducing it — choosing between two topics, handling follow-ups, hearing each recording once — is preparing for a different exam.
  2. Never hearing yourself speak. Fluency and clarity only improve once you record yourself. Most candidates discover their verbal tics the first time they listen back.
  3. Answering too briefly. Two of the eight criteria — completion of the tasks and interaction — penalise one-word answers directly. A useful rule: a fact, a reason, an example.

LetzTest is built around those three points: the exact format, systematic recording, and feedback that tells you which of the eight criteria is costing you points. See the price and what is included.

Panoramic view of Luxembourg City
Luxembourg City. Photo: Benh LIEU SONG, CC BY-SA 3.0, via Wikimedia Commons.

Sources and verification

This page was written on 3 September 2026 from information published by the INL (inll.lu and the MyINL registration platform), the national education portal (men.public.lu) and guichet.lu. Procedures, amounts, durations and exam sites can change: always check with the INL before registering. Where public sources disagree — as they do on the length of the listening test — we say so rather than pick a side.

Private preparation platform. LetzTest is a private preparation platform. It is independent of the INL (Institut national des langues Luxembourg) and of the Ministère de la Justice, and it neither runs nor awards the exam.