I am excited to assign more writing now that I can give them specific and objective feedback more quickly. I may even postpone my retirement because of your product!
Backed by
Pick a rubric from our library, or let CoGrader detect the right one from the essay.
Evaluating CoGrader for your school or district? See AI grading for schools.
50,000+ Teachers trust CoGrader
2M+ Essays graded with AI
1,000+ Schools use CoGrader
80% Less time grading
Used at 1000+ schools
Meet your AI Grader
What the AI does on the first pass, before any grade reaches a student.
First-pass grading
CoGrader scores every submission criterion by criterion and drafts feedback in seconds, for your whole class at once.
Your rubric and state standards
Grade with a state-aligned rubric, your own upload, or one built from your prompt. The score matches the criteria you set, not a generic scale.
Per-student feedback
Every student gets specific, rubric-aligned comments they can act on, drafted alongside the score.
The teacher keeps final say
Every grade routes to you. Change any score, rewrite any comment, and nothing reaches a student without your sign-off.
Class analytics
See how the whole class performed against each criterion, so you know what to reteach before you hand anything back.
AI-writing detection
Flag likely AI-written work with the evidence behind each flag, so you can look closer before you grade.
See CoGrader at work
CoGrader applies your rubric to a whole class of submissions and drafts rubric-aligned feedback for every student.
You get the first draft, so you can spend your time on the comments that actually move a grade.
Backed by UC BerkeleyCoGrader vs generic ChatGPT or Gemini
You can paste one essay into ChatGPT and get a guess back. Grading a whole class with your rubric, then handing feedback to students, asks for more than a guess: consistency, your standards, your LMS, and a record of who approved each grade.
What grading a class needs
Generic ChatGPT or Gemini
CoGrader
Grades with your rubric
paste each time
Uses your state's standards
Consistent scoring across a class
Import and export with your LMS
Teacher signs off before grades publish
partial
Class performance analytics
Student data protection
SOC 2 Type 1
Grading in Google Classroom? See how CoGrader imports and exports in one click on the Google Classroom integration.
AI grading that fits your LMS
Grade without leaving your workflow
Import, grade, and return a whole class without leaving Google Classroom. Canvas and Schoology are supported on School and District plans.
- Step 1
Import
Pull in your students' assignments from Google Classroom in one click.
- Step 2
Grade
AI grades each submission against your rubric and drafts feedback for your review.
- Step 3
Export
Send grades and feedback back to Google Classroom, also one click.
Grade with your rubric, or your state's standards
The score reflects the criteria you set, not a generic scale.
Start from a state-aligned template, upload the rubric you already use, or build one from your assignment prompt. CoGrader grades to the rubric you choose and shows how every score maps to it.
STAAR / Texas
TXArgumentative, Informative, and Narrative rubrics for grades 6 to 12. Aligned with TEKS standards.
See STAAR rubricsCAASPP / California
CASmarter Balanced ELA performance task rubrics. Argumentative, Informative, and Narrative writing.
See CAASPP rubricsB.E.S.T. / Florida
FLFlorida Assessment writing rubrics for grades 4 to 10. Aligned to the B.E.S.T. ELA standards.
See B.E.S.T. rubricsNew York State ELA
NYProse Constructed Response rubrics. Narrative, Literary Analysis, and Research Simulation tasks.
See New York rubricsAP / College Board
APAP Lang, AP Lit, AP History DBQs and LEQs. Official College Board scoring rubrics.
See AP rubricsTrusted by teachers nationwide
Real teachers on the time back and the feedback quality.
I am absolutely blown away by CoGrader. It has been excellent for pre-scoring essays and providing students with comprehensive, usable feedback.
What usually takes me days (and way too many hours of off-contract time), took me mere hours. I plan on hosting a PD for my staff in the next few weeks.
Co-workers, students and I have compared results from CoGrader with a variety of other AI scoring for AP essays, and yours is BY FAR the most accurate.
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.
Teachers will be motivated to assign more writing. It allows teachers to personalize student feedback quickly, leaving more time for targeted instruction.
I almost cried when I used it. It was as if someone handed me my weekends back on a silver platter.
THANKS. CoGrader is BY FAR the most accurate AI scoring for AP essays I have used, with the best feedback.
I am excited to assign more writing now that I can give them specific and objective feedback more quickly. I may even postpone my retirement because of your product!
I am absolutely blown away by CoGrader. It has been excellent for pre-scoring essays and providing students with comprehensive, usable feedback.
What usually takes me days (and way too many hours of off-contract time), took me mere hours. I plan on hosting a PD for my staff in the next few weeks.
Co-workers, students and I have compared results from CoGrader with a variety of other AI scoring for AP essays, and yours is BY FAR the most accurate.
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.
Teachers will be motivated to assign more writing. It allows teachers to personalize student feedback quickly, leaving more time for targeted instruction.
I almost cried when I used it. It was as if someone handed me my weekends back on a silver platter.
THANKS. CoGrader is BY FAR the most accurate AI scoring for AP essays I have used, with the best feedback.
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Frequently Asked Questions
AI grading for teachers, answered.
Can you use AI for grading?
Yes. AI grades a strong first pass, scoring each submission with your rubric and drafting feedback in seconds. In CoGrader the teacher then reviews and signs off, so AI handles the repetitive pass and you keep the final grade.
Which AI is best for grading?
The one that grades with your rubric and leaves the final say with you. General chatbots score whatever you paste in, without your standards, your LMS, or a review step. CoGrader is built for teachers: it grades a whole class with your rubric and routes every score to you to approve.
Is there a free AI grading tool?
Yes. CoGrader is free for up to 100 essays a month, including the rubric builder and Google Classroom import. Paid plans add more submissions, more integrations, and class analytics.
Is AI grading accurate?
Accurate enough to trust as a first pass, not as a final grade. CoGrader applies your rubric consistently to every submission and shows the reasoning behind each score, then routes every grade to you to review before students see it.
Can teachers change the AI's grades?
Yes, every one. CoGrader drafts the score and the comments; you edit any score, rewrite any feedback, and approve the result. Nothing publishes without your sign-off.
Does the AI grade with my rubric or my state's standards?
Both. Load a state-aligned rubric, upload your own, or generate one from your prompt. CoGrader grades with the standards you set, not a generic scale.
What can CoGrader grade?
Written work across subjects: essays, document-based questions, science claim-evidence-reasoning responses, constructed responses, and short answers. You set the rubric for each.
Can I use CoGrader for AI marking in the UK?
Yes. CoGrader works for AI marking against your own mark scheme the same way it grades with a US rubric. Upload your criteria and it marks the class set with them.
Which LMS does AI grading work with?
Google Classroom, Canvas, and Schoology, with Brightspace supported too. CoGrader imports submissions and exports grades back to your gradebook.
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CoGrader is right for you?
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