Argumentative Essays
Rubrics from 6th to 12th Grade and Higher Education. Grades Claim/Focus, Support/Evidence, Organization and Language/Style.
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50,000+ teachers using CoGrader
2M+ papers graded
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Used at 1000+ schools
What it is
What is an AI Paper Rater?
An AI paper rater reads student papers and provides rubric-based scores and written feedback. CoGrader's paper rater evaluates each paper against your rubric criteria individually and generates personalized feedback for every student.
Every essay type
Deliver fast feedback on your papers
CoGrader rates papers using rubric-based evaluation across every essay type. In addition to the 30+ Rubrics in our Library, you can also build your own rubrics.
Informative Essays
Rubrics from 6th to 12th Grade and Higher Education. Grades Clarity/Focus, Development, Organization and Language/Style.
Narrative Essays
Rubrics from 6th to 12th Grade and Higher Education. Grades Plot/Ideas, Development/Elaboration, Organization and Language/Style.
Analytical Essays
Rubrics from 6th to 12th Grade and Higher Education. Grades Claim/Focus, Analysis/Evidence, Organization and Language/Style.
AP Essays, DBQs & LEQs
Grade Essays from AP Classes, including DBQs & LEQs. Grades according to the AP rubrics.
+30 Rubrics Available
Browse the full library or build your own rubric in minutes.
Explore rubricsPress & media
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Loved by teachers
Why teachers choose CoGrader to rate papers
CoGrader is a complete grading workflow that scores and provides feedback for every student, with built-in AI detection and plagiarism checking.
"I am excited to assign more writing (my kids need so much practice!) now that I can give them specific and objective feedback more quickly. I may even postpone my retirement because of your product!"
Irene H.
ELA, High School
"Helping teachers GRADE but more importantly helping GIVE QUALITY FEEDBACK - and putting the power of great feedback into the hands of kids so they have AGENCY to improve."
John D.
Curriculum Coordinator
"Teachers will be motivated to assign more writing assignments. It is an enriching, time-saving tool for teachers, which allows teachers to personalize student feedback quickly, allowing more time for teachers to provide targeted instruction."
Mark M.
Principal
"THANKS! Co-workers, students and I have compared results from co-grader with a variety of other ai scoring for AP essays, and yours is BY FAR the most accurate (I score for the AP Exam), with the best feedback."
Karen W.
Department Chair, ELA
Integrations
Integrate with your LMS
Import papers directly from your Learning Management System, rate them with AI, and export scores back.
Google Classroom
Import assignments and student papers directly. Export rated scores and feedback back in one click. Available on all plans.
Canvas
Full Canvas integration for importing student submissions and syncing grades back. Available on school and district plans.
Schoology
Import assignments from Schoology, rate papers with AI, and export grades back. Available on school and district plans.
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Last updated: April 2026
Frequently Asked Questions
CoGrader: the AI Teaching Assistant.
How does the AI paper rater work?
Import student papers from your LMS or upload them directly. Choose a rubric (30+ built-in templates or your own). CoGrader's AI reads each paper, scores it against each rubric criterion individually, and generates detailed feedback explaining the score. You review everything before it goes to students.
Can I rate papers with my own rubric?
Yes. You can upload any rubric you already use, or build a custom one in CoGrader. The AI rates papers against your exact criteria and scoring levels. This works for school-specific, district-mandated, or personally designed rubrics.
What types of papers can CoGrader rate?
CoGrader rates argumentative, informative, narrative, and analytical essays, plus AP formats including DBQs, LEQs, and SAQs. Built-in rubrics cover grades 6 through higher education, aligned to CCSS, TEKS, STAAR, Florida B.E.S.T., CAASPP, New York Regents, and AP/IB standards.
How many papers can I rate for free?
Individual teachers can sign up and use CoGrader for free, including access to 30+ rubric templates, AI-powered paper rating, and AI detection. School and district plans with Canvas/Schoology integration and unlimited usage are available at custom pricing.
Does it include AI detection?
Yes. Every paper rated through CoGrader is automatically checked for AI-generated content. You see a confidence score alongside the rubric-based rating for each submission. No separate AI detection tool needed.
What feedback do students receive?
Each student gets detailed, personalized feedback explaining their score on each rubric criterion with specific suggestions for improvement. The feedback references their actual writing and identifies concrete areas to work on.
Does it work with Google Classroom, Canvas, and Schoology?
Yes. CoGrader integrates with Google Classroom (all plans), and Canvas and Schoology (school/district plans). Import papers, rate them, and export scores back to your LMS without leaving CoGrader.
Can I rate papers in languages other than English?
Yes. CoGrader supports multilingual paper rating. The AI generates feedback in the same language as the student's submission, making it suitable for bilingual programs and world language classes.
How does CoGrader rate papers differently from free online tools?
Free online paper raters are designed for students to check individual documents. CoGrader is built for teachers: import an entire class from your LMS, rate every paper against your rubric with per-criteria scores, generate personalized feedback per student, detect AI-generated content, and export grades back. It's a grading workflow, not a single-document checker.
Is student data safe?
CoGrader is SOC 2 Type 1 certified, FERPA, COPPA, and SOPIPA compliant. Student data is anonymized before processing and never used for AI model training. All data handling follows NIST 1.1 framework standards.
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