AI essay grader: honest grades before you submit.
Paste your essay and get a calibrated 0-100 score broken down by thesis, evidence, structure, style, and mechanics. Each criterion gets specific feedback with quoted phrases, not vague "improve flow" platitudes.
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How it works
Three steps. Done in 60 seconds.
Paste your essay
Or paste from Google Docs. Or write it directly in our editor with built-in AI text actions.
Optional: paste your rubric
Got a specific rubric from your professor? Drop it in and AI weights its scoring toward what your prof actually grades on.
Get an honest grade
Donut score ring, per-criterion bars, 3-5 strengths, 3-5 weaknesses (with quoted phrases), and 2-4 concrete next-step suggestions.
Why it works
Built for actual studying, not just demos.
Calibrated 0-100 rubric
Most college essays land 75-87. Reserve 90+ for genuinely strong work. We explicitly prompt against grade inflation: a 78 stays a 78.
Per-criterion breakdown
Scores for thesis, evidence, structure, style, mechanics. So you know exactly which parts to fix.
Quoted-phrase feedback
Strengths and weaknesses reference specific phrases from YOUR essay: so you know exactly what's working and what isn't.
Custom rubric support
Paste your professor's rubric and AI weights its judgment toward what they care about. Critical for class-specific styles.
Concrete next steps
2-4 specific actions to take next, not vague "improve flow." Things like "strengthen para 2's evidence by quoting page 47."
Pair with the AI essay editor
Same product includes 9 AI text actions (expand, shorten, rewrite, etc.) so you can act on the feedback inline.
vs alternatives
Why students switch to StudentHubAI
FAQ
Common questions
How close are the grades to a real professor's?+
Usually within about 5 points of what students actually get back. Treat the number as a sanity check and the per-criterion notes as the real value, since that's where you find out which paragraph is doing no work.
Will my professor know I used this?+
There's nothing to detect. You wrote the essay, we graded it. That's the same as handing it to a friend or the writing center before you submit.
What happens if I paste in my professor's rubric?+
The grading weights shift to match it. That matters more than people expect, because a paper that would score well generically can still miss what your specific rubric asks for, like a thesis that has to be debatable.
Can it grade research papers, not just essays?+
Argumentative essays, analytical papers, literature reviews, research papers and lab reports all work. Creative writing is the weak spot, so take those notes with a pinch of salt.
Does it catch plagiarism?+
No, and it's not trying to. We grade how good the writing is, not where it came from. Turnitin is the tool for the other question.
Can it improve my essay, not just grade it?+
The editor has nine AI text actions (expand, shorten, rewrite, improve and so on) you can run on any highlighted passage, plus an inline citation check. Every suggestion also has a Fix it for me button if you would rather it just applied the change.
How long can the essay be?+
Around 16,000 characters, roughly 3,000 words or six double-spaced pages. Longer papers work fine if you grade them a section at a time.
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