Verify an onSET certificate
Quick and easy authenticity verification
To verify the authenticity of an onSET certificate, please scan the QR code on the certificate. The details will automatically be filled into the verification form. Click "Send data" to send the information to g.a.s.t. for verification.
If you cannot scan the QR code, please enter the details manually into the verification form. Make sure to copy all details exactly as they appear on the certificate, paying particular attention to uppercase and lowercase letters. Then click “Send data”.
The verification result will be displayed immediately. If the information stored in the g.a.s.t. database matches the details on the certificate, the submitted onSET certificate is valid.
If you have any questions or concerns, please contact us at kontakt@gast.de.
Research, development
From item response theory to AI-assisted text analysis: together with renowned universities, g.a.s.t. conducts research into the measurement of linguistic and cognitive abilities. The findings feed continuously into the further development of TestDaF, onSET, TestAS and dMAT.
Our research projects
In its research projects, g.a.s.t. works with partners from academia and practice to explore current questions around language proficiency, academic aptitude and digital learning. Discover our projects, collaborations and research findings.
onSET publications
Explore academic publications on onSET and German-language C-tests, from scaling and standard setting to difficulty prediction and response time.
onSET is an online placement test for German and English based on the C-test format. In just 40 minutes, it provides a reliable assessment of language proficiency from A2 to C1 on the CEFR scale. Universities and language institutes use onSET for course placement, exam readiness, scholarship applications, and proof of language skills for professional purposes.
