Goethe-Zertifikat C2

The Goethe-Zertifikat C2: Großes Deutsches Sprachdiplom (formerly "Zeugnis über die Zentrale Oberstufenprüfung") is a Goethe-Institut certificate proving high-level German language ability.
The "Zentrale Oberstufenprüfung" (; ZOP) has been integrated into the "Goethe-Zertifikat C2" as of 1 January 2012. The ZOP is rated at level C2 of the Common European Framework of Reference for Languages (CEFR), the highest of the CEFR levels, signalling a level of language ability comparable to an educated native speaker. The exam "Zentrale Oberstufenprüfung" requires the examinee to understand difficult texts and to communicate eloquently in both spoken and written language.
Possessing a ZOP certification is considered valid proof of German language proficiency for anyone seeking entry into a German Hochschule or university. It is also valued as a qualification proving mastery of German in business contexts.
The "Zentrale Oberstufenprüfung" may only be administered to people at least 16 years old who have not learned German as a native speaker. The requirement for a person undertaking the ZOP is estimated at around 1,000–1,200 hours of German language lessons.