Direct answer
A student Turnitin check is a pre-submission review that shows how much of your paper matches other sources (the similarity score) and whether Turnitin's AI writing detection model believes part of the text was generated or modified by an AI tool. Turnitin adds an AI writing indicator to the Similarity Report that shows an overall percentage of the document that AI writing tools may have generated, and only instructors and administrators are able to see that indicator [1]. Since you often cannot view your own score after submitting, running a check on your draft beforehand is the practical way to know where your paper stands before it counts.
How can a student check their paper with Turnitin before submitting?
The exact steps depend on how your instructor configured the assignment, but the report itself only generates when a submission meets Turnitin's file requirements: a supported file type (.docx, .pdf, .txt, or .rtf), at least 300 words of prose in a long-form writing format, no more than 30,000 words, and a supported language [2]. If your draft qualifies, Turnitin processes it and produces the AI Writing Report alongside the similarity check.
When a qualifying submission is processed, the AI Writing Report shows an overall percentage of the qualifying text that the model thinks could be AI-generated. Scores between 1% and 19% are deliberately not surfaced and display as an asterisk (*%), while scores between 20% and 100% show a numeric percentage, and a document with no detected AI text can display 0% [2]. This is the number students are usually trying to preview before submission.
It is also important to know that the AI percentage is completely independent of your similarity score — the two are separate calculations, and AI writing highlights do not appear inside the Similarity Report [2]. Understanding that distinction helps you interpret your results correctly instead of confusing one number for the other.
What does a student's Turnitin report show for similarity and AI writing?
What you actually see depends on how your institution has set things up. As Turnitin's student guidance explains, a student cannot self-check a paper inside Turnitin without uploading it to an official assignment created by the instructor, unless the institution has enabled Turnitin Draft Coach [3]. If Draft Coach is not available, the ability to check your work beforehand depends entirely on the instructor's assignment settings [3].
Where resubmissions are allowed, there are strict limits. In classic assignments, the first three attempts generate a similarity report immediately, but from the fourth attempt onward you must wait 24 hours for the next report; in standard assignments you can resubmit up to three times within a 24-hour period [3]. If your instructor has disabled resubmissions, your first upload is final, and you lose the chance to check your paper beforehand through the official system [3].
For the AI side, remember that the indicator is instructor-facing. Turnitin states that the AI writing indicator shows the overall percentage of the document that AI tools may have generated or modified, and only instructors and administrators are able to see it [1]. Turnitin also maintains that the model keeps the false positive rate below 1%, and that it does not make a determination of misconduct — the percentage is data for educators to interpret under their own academic policies [1].
Can students run a real Turnitin AI and similarity check on their own draft?
Technically yes, but only through official channels that your institution controls. Turnitin's Student hub gathers the student-facing guides that cover exactly this area: understanding the Similarity Report as a student, accessing your similarity score, resubmitting and managing submissions, and using Draft Coach inside Microsoft Word Online or Google Docs [4]. In every case, the feature must be enabled by your school first [4].
In practice, this leaves many students without an official route to preview their report — Draft Coach has to be licensed by the institution, resubmission limits are tight, and the AI indicator is not visible to students at all [4][1]. That is why a growing number of students run a real Turnitin check on their own draft before it ever reaches the official assignment.
A genuine pre-submission check should give you the same outputs an instructor sees: the similarity percentage and the AI writing percentage, using the same *% bucket for scores below 20%. Running that check on your own draft — before submission — lets you see which sections might raise flags and fix them while you still can [4].
Turnitin0 was built for exactly this situation: it gives you a real Turnitin AI writing report and similarity report on your own draft before you submit it to your course. The AI score display follows the same rules your professor sees — any score below 20% shows as *%, with 0% as the only explicit low numeric outcome — and reports are delivered within minutes so you always know where your paper stands. Instead of guessing whether your draft will raise flags in the official system, you can see the result ahead of time.
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FAQ
Can I run a Turnitin check myself as a student?
Not inside Turnitin itself unless your institution has enabled Draft Coach or an assignment that allows resubmissions — otherwise your self-check options depend entirely on your instructor's settings [3].
Will my school see that I ran a check?
If you check a draft through a third-party service before submitting, nothing is added to your instructor's assignment; your paper only enters the official Turnitin system when you submit it there.
What does the *% AI score mean?
Turnitin deliberately displays any AI detection percentage between 1% and 19% as an asterisk (*%) rather than a number, because scores in that range are considered less reliable; 0% is the only low numeric score you will typically see [2].
How long does a Turnitin check take?
Generating official reports can take several minutes; checking services typically deliver results within minutes, and most students receive their reports in about 10 minutes.
Is the AI score the same as my similarity score?
No. The AI writing percentage and the similarity score are independent calculations, and AI writing highlights are not shown in the Similarity Report [2].