Free trial
A free plan for teachers covers 150 essays each month with rubric grading and no stated time limit, which functions as the entry point for evaluating the tool.
Learn moreCoGrader
Rubric-based essay grading that keeps the teacher in charge
Beginner
What is CoGrader?
CoGrader is an AP history grader tool. An AI essay grader for teachers that imports assignments from Canvas, Google Classroom or Schoology, scores submissions against state and AP rubrics, and returns criterion-level feedback for teacher review before release. Free tier covers 150 essays monthly.
CoGrader is an AI essay grader built for the workflow teachers already have: import a class from the learning management system, attach the rubric the assignment is scored against, and let the model produce a score plus written feedback for each submission. The teacher then reviews, edits and approves before anything reaches students. The company reports adoption by more than 100,000 teachers across 16,000 US schools and roughly 2.5 million essays graded, with a stated time saving of about 80% on grading. The graded output goes beyond a bare number. Each essay comes back with a rubric breakdown by criterion, a glow and grow comment pair written in student-facing language, a grammar and word choice check with specific suggestions, and an originality report that flags possible AI assistance or plagiarism. CoGrader also offers discussion prompts tied to the student's own phrasing, so a teacher can probe whether the writing is genuinely theirs. A trends view aggregates the class: common growth areas, average score by rubric criterion, who is ready for enrichment and who needs reteaching. Fit is squarely K-12 and higher education writing instruction in the US. The rubric library leans on state and AP standards (AP Lang argument, Texas STAAR, California CAASPP, Florida B.E.S.T. and 500 or more others), and canvas, Google Classroom and Schoology sync grades and feedback both ways. Scores are validated against official state raters: in a study of 600 Texas STAAR responses scored by TEA raters, 79.3% received the identical score and 98.5% landed within one point. Handwritten work is supported through phone photos, copier scans or imported images. The tradeoff is a narrow scope. This is not a general writing assistant or a chatbot; it grades against rubrics for classroom essays and little else. Teachers who want to grade on their own bespoke criteria still need to load that rubric in, and AI detection findings are advisory rather than conclusive, which the product itself treats as a prompt for conversation. Districts weighing adoption should read the transparency note and the published validation study before rolling it out.
How do you use CoGrader?
1Create a teacher account
Sign up with a school email to unlock the free teacher allowance of 150 essays per month. No payment details are needed to start grading.2Connect your LMS and import an assignment
Link Google Classroom, Canvas or Schoology and pull in a class and assignment, which brings student submissions across automatically. Without an LMS, upload PDFs, DOCX files or photos instead.3Attach the rubric
Pick from the built-in library (AP English argument, STAAR, CAASPP, B.E.S.T. and hundreds more) or supply your own criteria and point weights.4Grade the set and review
Run grading across the whole batch, then open each essay to check the criterion scores, glow and grow comments and grammar suggestions. Edit anything that reads off before approving.5Push grades back and read the trends
Send approved scores and feedback to the LMS gradebook, or export a CSV when working outside one. The trends panel summarises class averages and common growth areas for reteaching decisions.6Add handwritten or scanned work
If a class set came back on paper, photograph the pages or scan them at the copier. CoGrader sorts pages by student and grades each essay against the same rubric.
Pros and cons
Pros
- Grades against real rubrics, including AP Lang, STAAR, CAASPP, B.E.S.T. and 500 or more state-standard optionsAI
- Two-way LMS sync pushes scores and comments back to Canvas, Google Classroom and Schoology gradebooksAI
- Every score and comment passes through teacher review before students see itAI
- Class trends highlight common growth areas and flag students ready for enrichment or needing reteachingAI
- Handwritten essays can be captured by phone photo, copier scan or LMS importAI
Cons
- No public price list on the homepage; district plans appear to run through a quote requestAI
- Scope is classroom essay grading, so it is not a general writing coach or lesson planning toolAI
- AI detection flags are advisory and can misread unusual but genuine student phrasingAI
- Reported time savings and validation figures come from the vendor's own studiesAI
How much does CoGrader cost?
Pricing
The homepage advertises a free teacher tier of 150 essays per month and points schools and districts to a separate page and a quote request form. No per-seat or tier prices are published on the homepage.
Learn moreSupport
No support channels or help centre details are described on the homepage. An AI transparency note and published research pages are available for schools doing due diligence.
Learn moreIntegrations
Two-way sync with Google Classroom, Canvas and Schoology. Also listed as working with Brightspace, Microsoft Teams, Blackboard, Eduphoria and DMAC Solutions, plus manual upload and CSV export.
Learn moreFeatures
Rubric library covering AP, STAAR, CAASPP, B.E.S.T. and 500 or more state-standard rubrics; batch grading with criterion-level scores; glow and grow feedback; grammar and word choice suggestions; AI detection and plagiarism reports; class trends with average by criterion; handwritten essay support; gradebook export.
Learn moreFrequently asked questions about CoGrader
How much does CoGrader cost?
The homepage advertises a free teacher tier of 150 essays per month and points schools and districts to a separate page and a quote request form. No per-seat or tier prices are published on the homepage.Does CoGrader offer a free trial?
A free plan for teachers covers 150 essays each month with rubric grading and no stated time limit, which functions as the entry point for evaluating the tool.How do you use CoGrader?
The walkthrough on this page covers 6 steps: 1. Create a teacher account 2. Connect your LMS and import an assignment 3. Attach the rubric 4. Grade the set and review 5. Push grades back and read the trends 6. Add handwritten or scanned work.What platforms does CoGrader support?
CoGrader is available on Web App.What does CoGrader integrate with?
Two-way sync with Google Classroom, Canvas and Schoology. Also listed as working with Brightspace, Microsoft Teams, Blackboard, Eduphoria and DMAC Solutions, plus manual upload and CSV export.What are the limitations of CoGrader?
No public price list on the homepage; district plans appear to run through a quote request. Scope is classroom essay grading, so it is not a general writing coach or lesson planning tool. AI detection flags are advisory and can misread unusual but genuine student phrasing.
Status
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Added10/21/2026
Platforms
Web App
Pricing
FreemiumFreeSubscription
