The Latinum serves as proof of Latin proficiency and is required for certain university programmes in Germany.
In Germany, there is no single nationwide Latinum examination. Each federal state has its own regulations. Students usually obtain the Latinum at school, but those who need it later can often take a supplementary or university examination.
Despite regional differences, all examinations test Latin translation skills, grammar, vocabulary, and knowledge of Roman literature and culture.

This is a state-recognized supplementary examination (Ergänzungsprüfung) in Baden-Württemberg. It is intended for students who did not obtain the Latinum during secondary school but need it for admission or graduation to certain university degree programmes.
https://rpk.baden-wuerttemberg.de/abt7/referat-75-allgemein-bildende-gymnasien/seiten/latein/
https://rps.baden-wuerttemberg.de/abt7/ref75/seiten/ergaenzungspruefung-in-latein-und-griechisch/
The examination generally consists of:
A written examination, in which candidates translate a modified original Latin text (around 180 words) into German in 3 hours. An oral examination, where candidates translate Latin text (around 65 words) into German and then answer questions about historical background, grammar and rhetorical devices. The oral examination lasts about 15 minutes, with 15 minutes of preparation beforehand.
The written and oral examinations each account for 50% of the final grade. Candidates pass the examination if their overall average is at least "sufficient" (Grade 4.0).
The examination texts are selected from the following three speeches by Cicero: Pro Sexto Roscio Amerino In Verrem (including the Divinatio in Caecilium) In Catilinam
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Many German universities offer intensive Latin courses specifically designed to prepare students for the Latinum or the Ergänzungsprüfung.
Link to the courses at Heidelberg University:
https://www.uni-heidelberg.de/fakultaeten/philosophie/skph/sprachkurse/index.html
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Textbook