What CoGrader is
CoGrader is an AI scoring tool for teachers. The homepage describes an AI essay scoring tool that gives feedback on essays and open questions by rubric, and the site also covers plagiarism and AI writing detection plus rubric generation.
Usage figures on the site cite 50,000+ teachers, 1,000+ schools and 2M+ essays.
What you can do with it
- Get rubric-based feedback drafts on essays
- Score open-ended responses
- Run plagiarism and AI writing checks
- Generate or align scoring standards
Who it is for
- Primary and secondary school teachers
- Writing course instructors
- Teaching and research teams
- Schools wanting consistent scoring
What to watch out for
- Final grading, student context and teaching judgement stay with the teacher
- Automated AI writing detection is unreliable and can flag honest work; do not use it as sole evidence of misconduct
- High-stakes exams, appeals and sensitive writing need manual review
- The usage figures and time saving claim are vendor statements
Pros & cons
✓ What we like
- Cuts the mechanical part of marking
- Rubric alignment helps consistency
- Covers detection and rubric generation
! What to watch out for
- AI detection results are unreliable
- Final judgement cannot be delegated
- Vendor statistics unverified
FAQ
Is CoGrader for students?
No. It mainly serves teachers completing marking and feedback.
Does it only grade essays?
No. Open questions and other written responses are also covered.
Can it replace teacher grading?
No. It is an assistance layer; the teacher keeps final judgement.
Last reviewed: 2026-09-18
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