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Plagiarism & AI Detection Built for K–12 Schools

Plagiarism detection, AI writing review, authorship evidence, and rubric grading tools — all in one transparent platform designed for teachers, schools, and districts.

Problems Checkmark Helps Solve

Modern classrooms face unprecedented challenges with digital writing, generative AI, and academic integrity.

AI-Generated Assignments

Students using ChatGPT, Claude, or AI paraphrasers to generate entire essays or paragraphs without developing authentic writing skills.

Copied or Improperly Cited Work

Passages pasted directly from websites, online study guides, or classmates without proper quotation marks and attribution.

Unclear AI-Detector Results

Vague percentage scores that accuse students without showing evidence, causing unfair accusations and stressed parent conversations.

Time-Consuming Essay Grading

Teachers spending dozens of hours each week reading, checking sources, writing repetitive rubric comments, and recording grades.

Inconsistent Academic Integrity

Varying enforcement standards across different departments, grade levels, and classrooms within the same school.

Core Capabilities Built for Education

Checkmark provides transparent evidence across all aspects of student writing.

Originality

Plagiarism Detection

Match text against billions of web pages, journals, and peer submissions with side-by-side quote comparison.

AI Review

AI Writing Indicators

Sentence-level AI confidence metrics that highlight suspicious structure without making unproven accusations.

Authorship

Writing-Process Playback

Keystroke-by-keystroke edit history playback showing how an essay evolved line by line over time.

Evidence

Copy-Paste & Transcription Evidence

Detect massive external paste events and rapid manual transcription patterns from external screens.

Autograder

Rubric-Based Grading

AI-assisted autograding based on teacher rubrics with customizable feedback drafts ready for instructor approval.

Integrations

LMS Integration

Seamless workflow integration with Google Classroom, Canvas LMS, Buzz LMS, and LTI 1.3 standards.

Transparent Evidence, Not Black-Box Guesswork

Checkmark combines plagiarism matching, passage-level AI signals, and full edit playback on a single report screen so teachers can make informed, fair decisions.

Checkmark assignment report showing originality tiles, autograder scores, highlighted essay, and side-by-side evidence
A real Checkmark assignment report — originality tiles, AI confidence indicators, and writing playback.

Checkmark transformed how our teachers handle writing submissions. Instead of arguing about AI percentage numbers, our staff and students review actual writing process evidence together.

Dr. Sarah Jenkins
Director of Curriculum & InstructionOakridge Academy & School District
Verified Educator Partner
Direct Consultation

Request a School Demonstration

Schedule a personalized demo or consultation to see how Checkmark supports academic integrity and saves grading time for your school.

Tailored for K–12 & Higher Ed

Custom seat counts, LMS setups, and policy alignment.

Interactive Sample Reports

Test with actual student assignments in real time.

Dedicated Onboarding

Full support for district admins, IT staff, and teachers.