ÖSD is an official German language proficiency exam that is recognized worldwide .Language levels within ÖSD are as per the Common European Framework of Reference for Languages (CEFR).
The acronym ÖSD has 2 meanings:
Ö = Österreich, S = Schweiz, D = Deutschland (meaning Austria, Switzerland, Germany)
Ö = Österreichisches S = Sprach D = Diplom (meaning Austrian language diploma)
ÖSD exam tests all 4 language skills – reading, listening, writing and speaking. It is divided into 2 parts – Written and Oral. Reading, listening and writing together is considered as a written exam.