Reimagined Plagiarism Forensics

See the writer,
build the thinker.

We give teachers the writing process itself: every keystroke, every revision, every moment a student paused to think. Plus autograding designed by teachers, so feedback reaches students while it can still help them grow.

No student logins
Lives in your LMS
9-min setup
Keystroke analysisAI detection
0 events logged
No edits recorded yet. The timeline builds as you write.
0 / 1,000 words
Min 50 words (50 to go)
Private
Essay Playback™live · try it
Why detection alone is failing

A score isn't evidence.
And teachers know it.

Telling a 16-year-old "the AI thinks 73% of this is AI" isn't a conversation a teacher can win, or one they should have to. Real evidence is watching the essay come into being: the dead-end sentences, the rewrites, the long pause before the right word, the very moments where real learning takes hold.

False accusations
Teachers report that current AI detectors have wrongly flagged honest students, with no evidence to defend the call.
Gaming the score
Students rewrite whole essays just to dodge a detection score, spending effort to beat the tool instead of learning.
Evidence, not guesses
Other detectors hand you a random percentage and leave you exposed to false accusations. We give you the actual writing evidence, so you can be fully confident if a case ever has to be made.
What we believe

Three things every school should expect.

Checkmark isn't a stricter version of what's already on the market. It's built around a different idea of what these tools are for.

Accessibility

Priced so every school can afford it.

Real academic integrity tools shouldn’t be a luxury for well-funded districts. Our pricing fits a Title I budget and a private-school budget the same way, because students at both deserve a fair process.

Pricing that fits any budget
Simplicity

Deploys once. Then disappears.

Drop it into Canvas, Google Classroom, or Buzz. No student downloads, no new logins, no Chrome extensions to police. Teachers see signals where they already grade, right inside the assignment.

Set up in under 10 minutes
Productive struggle

Protects the part that matters.

Real growth happens when a student wrestles with a sentence. Checkmark exists to keep that struggle real, to make sure the work that arrives in your inbox is the work a student actually did.

Essay Playback · Keystroke analysis
How it works

From draft to report in three steps.

However a student writes, Checkmark reads it, scans it, and hands you a report you can act on, so feedback reaches students in time to help them grow.

Step 1 of 3

However the work is written, it all flows into one pipeline:

W
Microsoft Word
.doc / .docx
Google Doc
Shared link
LMS Textbox
Native capture
W
Features

The whole writing process, in one report.

Five tools that work together, lead with the playback, and the rest fills in the picture.

Essay PlaybackFLAGSHIP

Watch the writing happen.

Causes of Roman Decline · Draft 1
Press play to replay how this essay was written.
0:00 / 0:20
Copy / Paste Detection

Know where the words came from.

71.0%
Overall
34.0%
Total
Pasted
63.0%
Total
Transcribed
8.0%
Total
Uncited
17.0%
Total
AI
Pasted passages highlighted in the essay
The fall of the Roman Empire was a slow process, not one event. Historians often cite economic instability, military overreach, and political corruption as primary causes of the collapse. These pressures fed on one another until the empire could no longer hold.
Autograder + Feedback

Save the time you spend on the obvious.

Thesis & Argument22 / 30
“Maria, your thesis lands, but paragraph 2 introduces a new claim without evidence. Tie it back to the source you used in paragraph 1, or cut it. Proficient.
Transcription Detection

Catch copying that’s typed by hand.

71.0%
Overall
34.0%
Total
Pasted
63.0%
Total
Transcribed
8.0%
Total
Uncited
17.0%
Total
AI
63% typed from another source
Transcribed passage
Rome’s decline had many tangled causes. The empire’s overextended borders, currency debasement, and reliance on mercenary armies steadily eroded the state’s capacity to govern its provinces. Each pressure fed the next.
Signature: Steady, evenly-spaced keystrokes with almost no revisions or composing pauses, consistent with copying text from another screen rather than writing it.
AI Detection

A second opinion, not a verdict.

71.0%
Overall
34.0%
Total
Pasted
63.0%
Total
Transcribed
8.0%
Total
Uncited
17.0%
Total
AI
AI signal low, not a standalone verdict
Most of the essay reads in the student’s own voice. The multifaceted socioeconomic ramifications of imperial overextension precipitated a systemic decline across the empire’s administrative institutions., the one passage the classifier flags.
Cross-checked against keystrokes: The 17% signal sits in paragraph 3, which was typed continuously over 8 minutes with normal pauses. Likely a false positive.
95%
Classifier accuracy
And it never stands alone, every flag is checked against the keystrokes.
Native LMS integration

The only tool with native Buzz LMS keystroke capture.

Most integrity tools redirect students to a third-party site. We don't. Checkmark reads the assignment text box where students already write, across Canvas, Google Classroom, and Buzz LMS, without breaking their focus or their flow of thinking.

  • Write in the assignment text box, or submit a Word or Google Doc
  • No student account, no extension, no app
  • Single SSO install for the whole district
  • Data stays in your existing LMS gradebook
No keystroke data? Still covered.

Submit any file type to run the static AI detector on its own.

C
Canvas
Most-used LMS in higher ed
G
Google Classroom
Most-used in K–12
B
Buzz LMS
First and only native keystroke partner
EXCLUSIVE
FAQ

Frequently asked questions.

Checkmark surfaces AI-generated writing, plagiarism, and copy-paste activity, and reconstructs the writing process itself through keystroke playback, so you see how a piece of work came to be, not just a score.
Checkmark offers flexible enterprise/institutional plans for departments, institutions, and districts. Contact our team for a quote tailored to your institution's size and needs.
Checkmark achieves 99.2% accuracy on AI detection and 98.7% on plagiarism detection. We recommend using these results as strong signals to inform your review, not as a substitute for it.
No. Student submissions are never used to train AI models and never sold to third parties. Your students' work stays private.
Yes. Checkmark is fully FERPA compliant. Student data is encrypted at rest, processed securely, and never shared outside your institution.
Checkmark supports Google Docs and .docx (Microsoft Word) files. Because our AI detection relies on a document's revision history, we're unable to support PDFs or other static file formats.
Yes. To enable AI detection for Word documents, you'll need to install Checkmark's Microsoft Word add-in, which captures the revision history Checkmark uses for its analysis.

Built with students in mind.
Trusted by educators.

Try Checkmark on a real assignment in your own LMS. No credit card, no sales call, no obligation. Just see what your students' writing looks like with the lights on, and how much further they go when their own thinking is what counts.

Used in 1,200+ schools·FERPA & SOC 2 Type II·Set up in 9 minutes