What AI Checker Do Teachers Use?

What AI checker do teachers use? It depends on the school. Teachers see AI-writing scores from checkers that schools add to their learning platforms: Turnitin, GPTZero and Copyleaks all say they connect to Canvas, for example, and Canvas’s own help guide says it has no plagiarism detection tool of its own.

This free lookup shows which checkers say they connect to your school’s platform, what each one looks at, what its maker says about accuracy and false positives in its own words, who sees the score, and what to do if a flag looks wrong. It does not check text for AI, and it will not help anyone get around a checker. It is here so scores are read fairly.

How to use the lookup

1. Pick your school’s learning platform, or Not sure.
2. If your school or teacher named a checker, pick it to see its card first.
3. Choose I’m a student or I’m a teacher for steps that fit your side of the desk.
4. If you were flagged for work you wrote yourself, read the steps, then unlock the letter template to ask for a meeting.

Does Canvas have AI detection?

Canvas’s own help guide says Canvas does not provide its own plagiarism detection tool. Schools connect third-party tools instead, and their originality details show up in SpeedGrader, the grading view teachers use. Turnitin, GPTZero and Copyleaks all list Canvas integrations, and Turnitin says its AI score sits inside its own report rather than on the platform’s pages.

Google Classroom is different: it has built-in originality reports. Google’s help page says they compare work against web pages and books and flag uncited text. It describes matching text, not detecting AI writing.

What AI checkers say about their own accuracy

These are the companies’ own claims, not independent tests. OpenAI, the maker of ChatGPT, says that in its experience AI detectors are not reliable enough, and that a detector it built labeled Shakespeare and the Declaration of Independence as AI-generated. Vanderbilt University turned off Turnitin’s AI detector in 2023, citing concerns about false positives.

If you were flagged for work you wrote

1. Ask what the concern is based on, and ask to see the report. Turnitin says teachers can download its AI report as a PDF and share it.
2. Gather your process: outlines, notes, drafts, sources and your document’s version history.
3. Point to the checker maker’s own guidance, quoted in the lookup above.
4. Offer to talk through your work, or to write a short piece in class.
5. Follow your school’s academic integrity and appeal process, and ask an advisor for help if you need it.

Don’t run your work through a “humanizer” or paraphrasing tool to change a score. Turnitin says its English detector looks for text changed by those tools, and it would not prove the work is yours.

For teachers: reading an AI score fairly

• Treat a score as the start of a conversation. Turnitin and GPTZero both say their results should not be the only basis for action.
• Know what the tool can judge. Turnitin needs at least 300 words of prose and skips lists, tables and code.
• Look at the process. Drafts, version history and in-class writing tell you more than one number. GPTZero recommends looking for patterns across assignments.
• Don’t ask ChatGPT whether it wrote something. OpenAI says those answers are random.

Setting school-wide rules? Our AI acceptable use policy template is a practical starting point, and AI readiness for nonprofits and education covers getting started on a thin budget.

Related on HOW TO // AI

• AI hallucination checker: fact-check an answer from ChatGPT, Claude or Gemini.
• Why AI makes things up: hallucinations explained in plain English.
• Free AI tools: more free checkers and generators.

Checked against pages from Turnitin, GPTZero, Copyleaks, OpenAI, Instructure, Google, Vanderbilt University and MIT Sloan on October 18, 2026. HOW TO // AI is not affiliated with any of these companies.