TestAS for refugees consists of a Core Test, which assesses the general ability to study and one out of four subject-specific modules. You can select a subject-specific module matching your planned course subject. The test may be sat in German, English and Arabic.
Overview: core test module and subject modules

You can find further information for test takers here: Test-taker information English

TestAS is offered by the Society for Academic Study Preparation and Test Development (g.a.s.t.), a registered association. TestAS is developed by ITB Consulting GmbH. The worldwide organisation of TestAS is conducted by the TestDaF Institute, Bochum. TestAS is sponsored by the German Academic Exchange Service (DAAD) with funds from the German Federal Ministry of Education and Research (BMBF).