The TestAS is offered by the Gesellschaft für Akademische Studienvorbereitung und Testentwicklung e.V. (g.a.s.t. = Society for Academic Study Preparation and Test Development, a Registered Association).
TestAS items are developed by ITB Consulting,
The TestAS is administered worldwide by the TestDaF Institute, Bochum.
The TestAS is supported by the German Academic Exchange Service (DAAD) and the German Federal Ministry for Education and Research.