Language exams not only empower you to provide evidence of your capacities, but also present a valuable goal for you to achieve during your stay, providing an affectation to learn.
At the end of the course, examinations are held to evaluate the proficiency of the participant. Examinations cover development of spoken, written and reading proficiency of participants.
Once you may just need to take it for your own satisfaction, or might be required to take a step such as the Zertifikat Deutsch (ZD also known as the ZDaF), the Großes Sprachdiplom (GDS), or the TestDaF. There are more than a dozen tests you can take to certify your capability in German.