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ZLO – Zertifikat Lëtzebuerger Orthografie

What is the ZLO ?

ZLO stands for Zertifikat Lëtzebuerger Orthografie.

It is an official standardized test consisting of 90 questions on Luxembourgish orthography.

The test is governed by the law of March 8, 2023, establishing the National Institute of Languages Luxembourg.

Who is concerned?

This test is intended for individuals who wish to certify their Luxemburgish spelling skills with an official test.

Procedure for the ZLO

The test consists of 90 questions on Luxembourgish orthography.

For each sentence, choose the version of the word that you believe is spelled correctly.

There is always only one correct answer.

Duration: maximum 40 minutes

Terms and Conditions

Result and Certificate

Each candidate who finishes the test receives a certificate issued by INLL, indicating the percentage of questions answered correctly.

Demo Version

Try the ZLO in a demo version to see what the official test will look like.

Available sites for the ZLO – Zertifikat Lëtzebuerger Orthografie

Luxembourg Glacis More information