sentences:  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.