AI Assisted Grading

Grade essays on your rubric, in your voice

CorpusKey grades essays and long-form assignments against the rubric you build — with per-criterion feedback rich enough to paste back to your students. Cut grading time from evenings to minutes.

See it in action

One minute, one essay, one graded rubric

How it works

Three steps from stack of essays to graded feedback

Build your rubric

Define the criteria, weights, and point levels the way you'd grade — or start from a template and adjust.

Upload student submissions

Drop PDFs or DOCX files, or a class-wide ZIP. Group submissions and individual essays both work.

Get graded output

Per-criterion scores plus feedback text you can review, edit, and publish to your students via CSV or shareable feedback links.

What you get back

Per-criterion scores. Per-criterion feedback. Ready to publish.

Below is a sample output — not from a real student. Actual grading against your rubric returns the same structure with your criteria and your point scales.

Grading Result

Sample submission — Essay #1

32 / 40

80%

Argument & Thesis

Weight: 30%

7 / 10

Your thesis is clear and identifies a specific position, but the connection to your evidence in the second paragraph could be tightened. Consider restating the thesis in the introduction and conclusion to reinforce its centrality.

Evidence & Analysis

Weight: 30%

8 / 10

You cite two strong sources and integrate them well. The analysis in paragraph three effectively links the evidence back to your thesis. To reach the top tier, add one more piece of counterevidence and address it directly.

Organization & Clarity

Weight: 20%

9 / 10

The essay flows well with clear transitions between paragraphs. Your paragraph structure is consistent and each paragraph advances the argument. Only minor rearrangement in the closing section would improve the ending.

Grammar & Style

Weight: 20%

8 / 10

A few comma splices in the second paragraph and one subject-verb agreement issue in paragraph four. Your word choice is precise and your tone is appropriate for an academic essay.

Download this as a PDF, CSV, or per-student feedback link ready for your gradebook.

Publish feedback

Works with your LMS

Publish grades and feedback back to your gradebook

Direct exports for Canvas, Moodle, and Blackboard. Brightspace via per-student feedback link column in the concatenated feedback CSV.

Canvas

Grades + feedback CSV

Moodle

Grades + feedback ZIP

Blackboard

Grades CSV import

D2L Brightspace

Grades + per-student feedback links

FERPA-compliant. Private by design.

Student submissions are never used to train AI models — yours, ours, or any third-party provider's.

Data is encrypted in transit and at rest. Grading runs are stored per-account, not shared across institutions.

You control retention. Export what you need to your LMS, then delete from CorpusKey with one click.

DPA (Data Processing Agreement) available for institutional review — contact us.

CorpusKey