Turnitin in Ireland: what a similarity score means

Short answer first: yes, and in more places than most students notice. Turnitin runs inside Brightspace at UCD, the University of Limerick and TU Dublin, inside Moodle at Maynooth, and Turnitin reports are named in UCC's misconduct paperwork. What it produces is a similarity report, not a plagiarism verdict. University of Galway states it plainly: Turnitin does not check assignments for plagiarism, it measures how far your text matches other documents in its database and on the internet. A percentage on its own proves nothing in either direction.

Everything below is taken from what named Irish universities publish on their own pages. The rules on using AI in the first place are a separate question, covered in what Irish universities say about ChatGPT.

Which Irish universities actually use it?

Enough of them that the safe assumption is yours does. The detail worth knowing is where it sits, who switches it on, and whether you get to see the result.

• UCD calls it the Originality Checker. UCD IT Services says the tool is Turnitin, and that it is available in all modules in Brightspace under the Assignment tool.
• TU Dublin leaves it to the lecturer. Its guidance says lecturers can decide to enable Turnitin on assignments in Brightspace, and that a student submitting through Brightspace can see the score on their submission screen.
• The University of Limerick runs it through Brightspace as part of the Assignments tool.
• Maynooth runs it through Moodle, its virtual learning environment, and describes it as a way to check submitted writing for unclear referencing, citation issues or potential plagiarism.
• University of Galway answers student questions about it in its academic integrity FAQs, which is where the clearest published explanation in the country sits.
• UCC names Turnitin reports among the supporting documentation a school sends when it reports a case to the Student Records and Examinations Office.

DCU is the useful exception to how these pages are usually written. Its Academic Integrity Policy does not name any product. It says instead that submitted coursework, assessments and theses may be subjected to electronic review and analysed electronically for plagiarism, collusion and AI content. That wording is broader than a single tool and it is worth reading twice.

Where it sits in your VLE

You will meet it in one of three ways. It is on by default in every module, as at UCD. It is switched on per assignment by the lecturer, as at TU Dublin. Or it is a separate Turnitin assignment you submit into. None of those changes what the report is. It changes only whether you see it, and when.

What does the similarity report compare your work against?

Four collections, and nothing else. TU Dublin's description is the most concrete: Turnitin compares a submission against an archive of internet documents, internet data, a repository of previously submitted papers, and a subscription repository of periodicals, journals and publications. UCD describes the same thing as a database of academic papers, articles, books and internet sources.

Maynooth then describes the output. Turnitin matches submitted text against its own database of electronic materials and the internet and produces an Originality Report, which highlights the matches it finds, gives an overall percentage of matched text, and gives a breakdown with links to where each piece of matched text was found.

Two things follow from that, and both matter more than the number. A source that is not in one of those collections cannot produce a match, so a low score is not evidence that everything in your essay came from your own head. And a match is only a string of text that also appears somewhere else, which is why a properly quoted and attributed passage produces exactly the same red block as a stolen one.

What does the percentage not tell you?

University of Galway's FAQs say the quiet part out loud. A similarity score on its own does not indicate the presence or absence of plagiarism, so the common practice of trying to reduce the score is redundant. The score may tell an instructor to look more closely at the list of matches, and if the matching material is cited and referenced correctly, then plagiarism is not present.

Maynooth's page puts the same limit on the software from the staff side: it can only compare submitted text against its database and the internet, and any judgement about plagiarism is made by the lecturer, not by the tool, and should not rest solely on a similarity percentage.

Can you see your own report before the deadline?

That depends on your module, and it is worth asking in week one rather than the night before. TU Dublin says students submitting through Brightspace can see the score on the submission screen where the lecturer has enabled the tool. Maynooth explains that if a lecturer has allowed students to see the originality report and to submit more than once, you can check whether cited material is being picked up correctly and revise before the real submission.

The self-check route

Maynooth also runs a Turnitin Self-Check page in Moodle, set up outside your own modules, so you can check your work and improve it before submitting to the module assignment. Its page says lecturers cannot see papers submitted there. If your university offers something like that, use it, and use it for the reason Maynooth gives: to see whether your referencing is landing, not to grind a number down.

What you should not do is paste your draft into a random free checker. Galway's FAQs tell staff never to upload student work to third-party AI detection software, because it may be an improper use of personal data or intellectual property, and UCD's guidance says your assignments and exam scripts are your own personal data. A site that keeps your draft can also become the source that your final submission matches against.

Is AI writing detection switched on anywhere?

Less often than the rumours suggest, and several Irish universities have said so in public.

The reasoning is published too. UCD says the tools are proven to be unreliable and notes that its position is reflected across other higher education institutions. Galway says AI detectors have been shown to not be effective at present. The University of Limerick's Academic Integrity Unit says the decision not to buy the Turnitin AI add-in was made in keeping with NAIN guidance on the limitations of generative AI detection systems. Maynooth, which does make the indicator available, tells staff to be cautious because of the risk of false positives and discourages relying on it alone.

None of that is permission to use AI. It means the university is not planning to catch you with a percentage. It plans to catch you with a conversation.

What does an investigation look at besides a score?

Your work, your explanation and your ability to stand over what you wrote. UCC's policy is the clearest published example in the country, so read it as the pattern.

• A person opens the case, not the software. The Head of School or their nominee informs you in writing at your UCC email, with detailed reasons and a copy of the work.
• You answer in writing. You get a specified window for a personal statement and may be invited to a meeting, where you can bring someone for support.
• The standard is the balance of probabilities, and the determination is made on the available evidence if you do not engage.
• The tool does not decide anything. UCC's policy says GenAI detection software is not sanctioned for the detection or investigation of alleged academic misconduct.
• A Turnitin report is evidence, not the verdict. It travels with the case file alongside emails, your statement and the assessment itself.

What the oral defence is actually testing

UCC's policy adds a step most students have never heard of. Where there are credible grounds to believe submitted work does not represent your own, you may be required to defend it orally. The policy says the oral exam is not an alternative assessment but a way to investigate, on the balance of probabilities, whether misconduct occurred: if you can demonstrate understanding, reasoning and command of your sources or methods, the oral may confirm authenticity, and an inability to explain or extend the work may be strong evidence of inauthentic authorship.

That is the whole game. Nothing in a similarity percentage survives a conversation about your own argument, in either direction. Which is why the useful preparation has nothing to do with the tool.

What should you keep while you write?

Enough of a trail that you could reconstruct the essay in fifteen minutes with someone sitting beside you. This is not paranoia, it is the same habit that makes a final-year project writable, and it costs almost nothing while you work.

The folder that answers the question

• Dated drafts. Version history in Google Docs or Word, or three files with dates in the names. The shape of a draft changing over two weeks is the single most convincing thing you can produce.
• Your reading notes, in your own words, with the page numbers attached. The habit that builds them is described in how to take notes you can actually use.
• The sources themselves. PDFs or full citations for everything you cited, so a challenged reference can be opened in front of you.
• The brief and any permission. The assignment brief, the module descriptor section on AI, and the email where a lecturer told you what was allowed.
• Prompts and outputs, if AI was permitted. Your module may already require them, and if it does not, keeping them costs nothing.

On a long piece of work this matters more, not less, because the gap between your reading and your submission can run to months. What a final year project in Ireland actually demands covers the reading log side of it in more detail.

What if your score is high and your work is your own?

Then it is probably doing what it was built to do. High matches come from the parts of an essay that are supposed to be shared: legal provisions and statutes, standard clinical or technical phrasing, the title and question, a departmental template, a long attributed quotation, your own bibliography. Galway's position covers all of it, because correctly cited matching material is not plagiarism.

Two situations are worth checking rather than shrugging at. If the report matches a previously submitted paper and you do not know where that came from, look at whether it is your own earlier work. Resubmitting your own material without telling anyone is treated as misconduct in its own right at Irish universities, under names like self-plagiarism or multi-submission, and DCU lists it expressly. And if the same passage keeps matching a classmate's, that is the collusion question, not the plagiarism one, and it is easier to explain before a marker raises it than after.

If you are worried, the move is to talk to the module coordinator before the deadline. Galway's FAQs make the point that supports this from a different direction: once an investigation has started, mitigating circumstances cannot be taken into account, so problems are cheaper to raise early. The wider shape of Irish assessment, and how much of your mark lands before any exam, is set out in how Irish university exams actually work.

Where Notibo fits

Nothing on this page is solved by another tool, and a similarity report is not a problem you can buy your way out of. What you can do is arrive at the draft with your own material already in your own words, because that is what makes a high score explainable and an oral defence a non-event.

Notibo records a lecture, or takes an audio file you upload, and returns a transcript, structured notes and flashcards with spaced repetition, so what was said in a lecture is still yours to work from in March. It also turns PDF, PPTX and DOCX files into notes and flashcards. It transcribes 89 languages, with the transcript in the language spoken. Pro is free for the first 14 days, with 240 minutes of recording and no card. After the trial the free plan covers 30 minutes of recording a month, and Pro is 9.99 euro a month. Uploads are capped at 50 MB per file. Ask the lecturer before you record, and do not upload another student's work or anyone else's personal data, because the same university rules that govern chatbots govern this. Files are stored in the EU on Supabase in Frankfurt, while transcription and the AI notes run on US processors under standard contractual clauses. The lecture recording feature is the part that does the work here.