At the end of level B1 you will usually pass an exam, providing you with the Certification of German "Zertifikat Deutsch des zentrums", at the end of level C1- you will be able to pass the Intermediate Level Exam "Diplom des zentrums" skills of level C1+ will enable you to pass the "TestDaF", an exam that will allow you to enter university "Deutschprüfung für den Hochschulzugang". "TestDaF" is under licence of the TestDaF Institute.
The exams 2018 are scheduled on:
February 13/ April 26/ May 23/ July 19/ September 20/ November 13
The registration fee for "Zertifikat Deutsch des zentrums" or "Diplom des zentrums" is 120 €, for TestDaF is 195 €.