If your are planning to study in a studienkolleg, you will have to pass an entry test (Aufnahmeprüfung). All studienkollegs conduct different entry test mostly for German language and Mathematics. However some just conduct test of German language.
Here are the sample tests of German Language and Mathematics for your preparation.
German Language Tests
- Studienkolleg Sachsen (Universität Leipzig)- German Language Test
- Studienkolleg Kiel German Language Test
- Studienkolleg Bochum- German Language Test