Turnitin class ID and enrollment key

What the class ID and enrollment key actually are

They are two halves of one credential. Turnitin generates both automatically when an instructor creates a class, and a student self-enrolling on turnitin.com needs both before any assignment becomes visible.

Turnitin’s student self-enrollment guide spells out the rules that matter most here: the key is case-sensitive, it lasts 14 days, and only one key can be active for a class at a time. Generate a new one and the previous key stops working immediately.

Where to get yours — there are only two places

Turnitin’s help centre article on finding these credentials is short and unambiguous for students:

• Ask your instructor directly. They generated the class, so they hold both values and can regenerate the key if it expired.
• Check the course syllabus or messaging board. Many instructors post both there at the start of term rather than answering the question thirty times.

There is no third option. Turnitin states plainly that its Technical Support “cannot provide you with a Class ID or Enrollment Key under any circumstances”, so contacting support only costs you time.

One thing worth checking before you chase anyone: if your school runs Turnitin through Canvas, Moodle, or Blackboard, you will never be given a class ID, because the integration handles enrollment for you. You just open the assignment and submit. Our guide to Turnitin inside Canvas walks through what that looks like and which reports stay hidden from students.

Why "free Turnitin class ID" lists never work

This is the most searched version of the question, so it deserves a direct answer rather than a lecture. Those lists fail for structural reasons, not because you found a bad one:

• The key dies in 14 days. Turnitin puts a hard 336-hour life on every enrollment key. A list published last month is guaranteed stale, and a list published this morning has under two weeks to live.
• Only one key is active at a time. The moment an instructor generates a replacement, every copy of the old key circulating anywhere stops working at once.
• Instructors are told not to publish them. Turnitin explicitly advises against posting keys on publicly accessible websites and recommends regenerating the key once the roster is full, specifically to block unwanted enrollments.
• Disabling self-enrollment kills the key too. Plenty of instructors turn self-enrollment off after week one, which expires the current key immediately.

Put together, a shared class ID has to survive an expiry clock, a regeneration, and an instructor who was advised to close the door behind them. That is why the pages ranking for those searches are full of dead credentials and nobody in the comments ever reports success.

The real risk is not that it fails — it is that it works

Suppose a key does still work and you submit your paper into a stranger’s class to see your score. Depending on that assignment’s repository setting, your paper can be stored in Turnitin’s student paper repository as a permanent source.

Weeks later you submit the same paper properly, for your own course, and Turnitin matches it against the stored copy of your own work. The report comes back at a very high similarity percentage against a source you cannot see, cannot explain, and cannot get removed without an administrator at the other institution intervening. Students hit this every term, and the fix is slow and humiliating even when you did nothing wrong.

We cover exactly which submissions get stored, and which do not, in does Turnitin save your paper. It is the single most important thing to understand before running any kind of self-check.

How to self-enroll once you have valid credentials

If your instructor gave you both values and you are enrolling on turnitin.com directly, the flow is short:

• Create a student profile, or log into your existing one. An account by itself gives you nothing until it is attached to a class.
• Enter the class ID exactly as given. It is numeric, so the usual failure is a missing or extra digit rather than a typo.
• Enter the enrollment key with its original capitalisation. This is the step that fails most often. The key is case-sensitive, and a copied trailing space breaks it just as reliably as wrong capitalisation.

If Turnitin rejects the pair, it asks you to contact your instructor for a valid key. That message does not distinguish between an expired key, a regenerated key, and a mistyped one — so confirm the current key with your instructor before assuming something is broken on Turnitin’s side.

If you only wanted to see your score

Most people searching for a class ID are not trying to join a course. They want the one thing a class gives them: sight of their own Similarity and AI scores before an instructor sees them. That is a reasonable thing to want, and it does not require a class at all: a private no-repository Turnitin check returns both reports without joining anyone’s class.

It is also worth knowing that no class ID is purchasable. Turnitin does not sell to individuals at all, so there is no paid route into a class of your own either — what Turnitin actually costs covers why, and what the official alternatives price at.

Your school’s own Turnitin account will not usually let you self-check unless an instructor set up a draft assignment or your institution licensed Draft Coach — see how to check your Turnitin score before submitting for the full set of options and what each one actually shows you. If you have never seen what the two reports look like side by side, this redacted real report example shows both.

Frequently asked questions