If you use AI in a term paper or thesis without permission, the consequences can go well beyond a poor grade. According to reports in the legal press (beck-aktuell, LTO), a ruling of the Administrative Court of Kassel dated 25 February 2026 shows how far a university may go in an individual case when it refuses a resit. This guide explains the case, its limits and what you can take from it for your own exams.
Short answer: According to reports by beck-aktuell (11 March 2026) and LTO, the Administrative Court of Kassel ruled on 25 February 2026 that using AI in exam work can amount to a particularly serious deception. The University of Kassel was therefore allowed to refuse a resit. According to the reports, the rulings (case numbers 7 K 2134/24.KS and 7 K 2515/25.KS) were not final as of March 2026, as an appeal had been admitted. The court can tell you the current status of the proceedings. Last updated: November 2026.
The most important points
- According to the reports, on 25 February 2026 the court upheld the grading of a bachelor thesis and a term paper as failed.
- The University of Kassel had also refused a resit because of the deception, and the court approved this approach.
- As of the March 2026 reports, the rulings are not final. The court admitted an appeal because the legal questions are of fundamental importance.
- A ruling applies first to the cases it decided. Whether your university would decide the same way depends on its examination regulations.
- Proving AI use is contested, even though courts accept the prima facie evidence principle.
What happened before the Administrative Court of Kassel?
According to the report by beck-aktuell, the University of Kassel graded a bachelor thesis in computer science and a term paper in a master programme in administrative law as failed. The university assumed that the students had used unauthorised aids, namely AI. Because of this serious deception, it also refused a resit. The court upheld the gradings. The reports give the case numbers of the two proceedings as 7 K 2134/24.KS and 7 K 2515/25.KS.
The order of the decisions matters. First came the grading of the work, then the question whether the university may refuse a resit. The court affirmed both points for the two cases before it. The legal press reports on the reasoning. Read the full judgment, available from the Hessian judiciary or a case-law database, before you quote it.
Why is the decision seen as a leading case?
According to beck-aktuell, the court set out rules that can be transferred to other cases. They concern the handling of AI in examinations and the question of how its use can be proven. The legal questions are therefore considered of fundamental importance, which is also why the appeal was admitted. A university cannot simply rely on the ruling without checking its own regulations.
LTO puts the core point in one sentence: using AI in exam work can be a particularly serious deception. This wording shows that the issue is not a minor matter but the gravity of the breach. Whether a specific breach is that serious is decided in the examination procedure of each case.
How can AI use be proven?
Proof is the hardest question. The guideline of the University of Mainz on dealing with deception, as of December 2025, describes the prima facie evidence principle. It suffices unless the students give a plausible alternative explanation. A complete chain of proof is then not required. The guideline also notes that applying this principle to AI-generated texts is still disputed.
The table below summarises the position of the sources. It does not replace an assessment of your own case.
| Question | Status of the sources | What you can conclude |
|---|---|---|
| Did the court uphold the grading? | Yes, rulings of 25 February 2026 (Administrative Court of Kassel, according to beck-aktuell and LTO) | The decision concerns the University of Kassel and the cases it decided. |
| Is the ruling final? | As of the reports (beck-aktuell, 11 March 2026): not final, appeal admitted | The legal position may still change. |
| How is AI use proven? | Prima facie evidence, disputed for AI texts (Mainz, December 2025) | The university must justify the allegation and give you a chance to respond. |
What does this mean for your own exams?
The ruling does not replace the examination regulations of your university. Whether a resit may be excluded is set out in each university’s regulations and in the higher education law of the relevant German state. A regulation in one state can be worded differently from one in another. Read your own regulations first instead of relying on a press report alone.
Practice also helps. The University of Potsdam, in its guidance on AI and examinations (as of 25 March 2026), describes the use of unapproved aids as deception. It states that such use can lead to the grade not sufficient under the examination regulations. This is one example from a single university, not a general rule for all universities.
Where is the line between help and deception?
What matters is what the university or the lecturer has approved. Without a clear rule, asking in advance is more sensible than assuming. If you want to use AI for structuring, literature search or language checks, look in the exam announcement or the assignment instructions. A guide on permitted uses of AI in study helps with classification.
An illustration: suppose your regulations allow two resit attempts and treat deception as a failed attempt. After a deception, only one attempt would then remain. How many attempts are left depends on your regulations, but a single incident can narrow your options considerably.
Frequently asked questions
Does the ruling apply to all universities?
No. The ruling concerns the decided cases at the University of Kassel. Other courts may decide differently, and universities have their own examination regulations. It does, however, show how one administrative court assessed the situation in the case before it.
Can I challenge a decision?
Yes, usually through the legal remedy named in the notice. The statement of legal remedies contains the deadline and the authority. The University of Mainz guideline describes a hearing before the decision as the usual step. Whether a missing hearing amounts to a procedural error depends on the individual case and on state law.
Does a grade of not sufficient always follow?
Not always, but in many regulations it is the rule. The University of Mainz guideline names, in general, a grade of not sufficient for deception in exams and written work. Check what your regulations say.
What if I only used AI for research?
Even then, the question is whether the use was permitted. Clear permission protects you, while a missing rule is a risk. Note what you used the tool for, and keep questions to the lecturer in writing.
Must I document my writing process?
The sources reviewed do not set a general duty to do so. In a proceeding, however, it can help to explain your way of working. The Mainz guideline provides that students can describe the facts, either in writing or in a conversation.
What to do now
- Read your examination regulations and the announcement of your exam for approved aids.
- Ask in writing if anything is unclear and keep the answer.
- If you face an allegation, check the notice for the deadline and the legal remedy at once.
- Get advice from the student advisory service or the examinations office on your regulations.
Related reading
- Hub on examination regulations: Understanding examination regulations
- AI in study: what is allowed (in German)
- AI in written exams
- Finally failed: what you can do now
- Plagiarism suspicion: procedure and your rights
Sources: beck-aktuell, report on the ruling of the Administrative Court of Kassel (as of 11 March 2026); LTO, report on the ruling (as of 31 March 2026); University of Mainz, guideline on dealing with deception (as of December 2025); University of Potsdam, guidance on AI and examinations (as of 25 March 2026).
Last updated: November 2026. This guide is general information, not individual advice.
