CoGrader

cograder.com ↗

AI essay grading with rubric-based feedback for teachers and schools.

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SI Score: 80/100
Pricing: Not confirmed
Free plan: Not confirmed
Sign-up required: Not confirmed

Ask SI about CoGrader

Answers use saved listing facts and recorded sources.

Homepage screenshot

SI REVIEWBased on the site's own pages, in a directory managed by people

What it does

CoGrader is an AI grading tool for teachers and schools. It grades essays and open-ended work against the teacher's own rubric. Teachers can upload PDFs, DOCX files or photos of handwritten essays, and export a gradebook CSV. It works with Google Classroom, Canvas, Schoology, Brightspace, Microsoft Teams and Blackboard, with two-way sync for some of them. A free plan lets teachers grade 150 essays each month. A signup page is available.

The site lists an AI grader, handwritten grading, graders for AP and state tests, an originality checker and an AI rubric generator. Teachers review every score and comment before students see it. The company says a U.S. Department of Education IES research award funds its work, and that its scoring is validated against official state raters. Pricing, privacy, terms and signup links appear on the site.

Best for

Teachers grading essays with their own rubricGrading handwritten paper essaysSchools and districts that use an LMS

SI Score

80/100

#1 in Education & Learning

Based on published information. No hands-on task test.

Method 2.0 · Published source review Assessed Oct 28, 2026Score ceiling for this evidence: 84/100.

Product usefulness 80

Evidence

CoGrader specifies importing LMS work or PDF/DOCX/handwriting images, grading against the teacher's rubric, and returning feedback or a CSV. Teachers review scores and comments before students see them, and the documented free allowance is 150 essays monthly. This supports 80 for a complete teacher-controlled grading workflow; agreement statistics and learning benefits are not independently established here.

Limits: Source-researched AI assessment reviewed by a separate native AI worker. No hands-on product test or human verification is claimed.

Source links and check dates are in Sources and checks below.

Separate website checks

These checks do not add points to the SI Score. They inspect the website's HTML, not the product in use.

Basic website checks100/100

HTTPS: yes
Homepage answered with HTTP 200
Privacy policy link: found
Terms link: found
Contact or about page: found

We check that these pages exist, not what they say. Ownership and company details are not verified.

Checked Oct 18, 2026.

HTML accessibility checks80/100

Page language set: en
Mobile viewport: yes
Images with a text alternative: 80 of 182
Main heading (h1): yes

Automated checks on the homepage HTML only. This is not a full accessibility audit.

Checked Oct 18, 2026.

Homepage HTML response100/100

First byte after 120 ms
Homepage HTML loaded in 0.2 s
HTML size 791 KB

Measured once from our server. Images, scripts and your own connection are not included.

Checked Oct 18, 2026.

Trackers in homepage HTML100/100

No known third-party trackers in the homepage code.

Only the homepage HTML is checked. Trackers loaded later by scripts, and what the service does with your data, are not covered.

Checked Oct 18, 2026.

Page date hints100/100

A copyright year is a weak sign of upkeep. It does not prove the content is current.

Checked Oct 18, 2026.

Policy links do not verify a company's conduct. An HTML response time is not application speed. Tracker and accessibility checks miss behavior after page load. Copyright dates do not prove product upkeep.

How the SI Score works →

Unconfirmed details may be unassessed, absent from the pages checked or temporarily unreadable. A missing price does not mean the service is free.

Sources and checks

Supporting pages for product usefulness, site facts, prices and separate website checks. Each record keeps its own date. Reading a page does not establish how well the product performs in use.

cograder.com/
- Product usefulness evidence
- Basic website checks (separate check)Checked Oct 18, 2026
- HTML accessibility checks (separate check)Checked Oct 18, 2026
- Homepage HTML response (separate check)Checked Oct 18, 2026
- Trackers in homepage HTML (separate check)Checked Oct 18, 2026
- Page date hints (separate check)Checked Oct 18, 2026
cograder.com/privacy-policy/
- Basic website checks (separate check)Checked Oct 18, 2026
cograder.com/terms-and-conditions/
- Basic website checks (separate check)Checked Oct 18, 2026

Checks without a source link

PricingUnknownChecked Oct 18, 2026
Free planUnknownChecked Oct 18, 2026
Sign-up requiredUnknownChecked Oct 18, 2026
PlatformsUnknownChecked Oct 18, 2026
APIUnknownChecked Oct 18, 2026
Open sourceUnknownChecked Oct 18, 2026

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