It is valid for life (no expiration), though some employers/institutions may ask for a test not older than 2 years.
The exam is divided into two main sections: a written part and an oral part. To pass, you must achieve at least in both sections. Max Points Passing Score (60%) Written
The (also known as Zertifikat Deutsch ) is an internationally recognized exam that verifies independent language use at the B1 level of the Common European Framework of Reference for Languages (CEFR). It is widely accepted for German citizenship ( Einbürgerung ) and permanent residence ( Niederlassungserlaubnis ). Exam Structure & Scoring
Reading, Language Elements (Grammar/Vocab), Listening, Writing Oral Speaking (usually a pair examination) 45 pts Key Exam Features