AI essay grader that gives rubric-based feedback in a fraction of the time
Best for teachers who want fast first-pass essay scoring against their own rubric with Google Classroom integration and bulk feedback. Treat it as a drafting aid, since AI scoring needs teacher review and can miss nuance and voice.
Facts & pricing last checked September 2026. How we review
CoGrader is an AI essay grader that scores student writing against rubrics and gives feedback in about 80% less time, with plagiarism and AI-text checks and teacher sign-off.
CoGrader is an education AI tool built to cut the time teachers spend grading essays and open-ended work. It scores student writing against specific rubrics, including state assessments like STAAR, CAASPP, B.E.S.T. and NY Regents, as well as AP, IB or custom rubrics, and generates meaningful feedback for every student in a fraction of the usual time. Beyond grading, CoGrader scans essays for potential copying and AI-generated text, letting teachers review flagged passages in context before finalizing grades. Crucially, the workflow keeps the teacher in control: the AI handles the repetitive first pass, and the teacher reviews, adjusts and signs off on every grade. The tool imports assignments from Google Classroom and reports adoption by more than 100,000 teachers across 16,000+ US schools. It is free for up to 100 essays per month including the rubric builder, with paid plans adding higher submission limits, more integrations and class analytics.
CoGrader is a widely adopted AI essay grader that scores student writing against rubrics, flags AI and plagiarism, and keeps teachers in control of final grades.
CoGrader focuses on the specific pain of grading essays and open-ended assignments, targeting K-12 teachers who spend hours on feedback. It reports adoption by over 100,000 teachers across 16,000+ US schools.
The product emphasizes teacher control and alignment to real rubrics, positioning AI as an assistant that handles the repetitive first pass rather than replacing the educator's judgment.
CoGrader grades against state, AP, IB and custom rubrics, generates per-student feedback, and scans for plagiarism and AI-generated text. It imports assignments from Google Classroom and offers a rubric builder.
Paid tiers add higher submission volumes, more integrations and class analytics, while the free tier covers up to 100 essays a month, making it accessible to individual teachers.
K-12 teachers and schools, particularly English and humanities teachers with heavy essay grading loads and standardized rubric requirements.
Classroom teachers grading essays
Teachers, department heads and school administrators
Curriculum and assessment leads
US K-12 schools and teachers with high essay-grading volume
CoGrader is a venture-backed education startup; verify funding details with the vendor or public sources.
It claims to help teachers grade essays and give feedback in about 80% less time.
State assessments like STAAR, CAASPP, B.E.S.T. and NY Regents, plus AP, IB and custom rubrics.
Yes. It scans for potential plagiarism and AI-generated text and flags passages for teacher review.
Yes. The AI does the repetitive first pass and the teacher reviews and signs off on every grade.
Yes. CoGrader is free for up to 100 essays a month including the rubric builder.
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