Is ChatGPT Good at Grading College Essays?

Is ChatGPT Good at Grading College Essays?

Not as a grader. In published tests on essay-scoring benchmarks, ChatGPT did not match human raters: one study found it gave lower marks than human raters and that its scores "do not correlate well" with theirs. No study we found tested college admissions essays. Use a chatbot to ask questions about your draft. Use fixed criteria when you want a number.

Most pages on this question are either a chatbot prompt list or a tool's home page. Neither tells you what happens when researchers compare a chatbot's marks with trained human raters. This page does, then gives you a test you can run yourself in ten minutes and three prompts that make a chatbot point at your sentences instead of rewriting them.

Every study abstract and policy page quoted below was checked on October 30, 2026.

What the research found

Three papers tested ChatGPT as an automatic essay scorer. None used college admissions essays: two used ASAP, a public set of student essays with scores from human raters, and one used TOEFL independent writing essays.

The abstract does not define regression effect. In statistics the term describes extreme values pulling toward the average; for a grader, that would mean strong essays marked down and weak ones marked up (our explanation). That is the opposite of what you need when you are trying to tell a working draft from a strong one.

The studies do not all agree. The second paper found ChatGPT slightly ahead of the other model it tested on average. The first found ChatGPT harsher than the other model. What they share is the conclusion in the first paper's own words: these models do "not seem an adequate replacement for human grading," though the authors find them "somewhat encouraging for their use as a tool to assist humans."

Our view: treat a chatbot's number on your college essay as noise, and treat its questions about your essay as possibly useful. The basis: the gaps with human raters above, on essays scored against a fixed scale, which is an easier task than an admissions essay with no published scale. The countercase: a chatbot is fine for one narrow check, such as "does this paragraph answer the question I pasted?", where you can verify the answer yourself in seconds.

Run the three-chat test

You do not have to trust the studies. Run this on your own essay.

1. Open three new chats. New chats, not one long one, so earlier messages do not steer later answers.
2. Paste the same text into each: the prompt you answered, then your essay, then "Score this college essay from 1 to 10 and list its three biggest weaknesses."
3. Write down each score and each list.
4. Compare. If the three scores differ by more than one point, ignore the scores. If the weakness lists do not overlap, ignore the lists too.
5. Keep only what repeats and what you can see. A weakness that shows up in all three chats, and that you agree with when you reread that sentence, is worth fixing. Everything else is not evidence about your essay.

Our guide to gradeglazing covers the twin problem: chatbots that praise every draft, and research on how often an AI judge disagrees with itself between runs. This test is the practical version: it tells you, for your essay, whether the number means anything.

Why admissions essays are harder to score

The studies above scored essays against the scale the human raters used. A college essay has no published scale, and the chat window does not know the things a reader knows:

• The prompt. The Common App lists seven prompts for 2026–2027. UC's PIQ page says "You must respond to only 4 of the 8 questions" and "Each response is limited to a maximum of 350 words." A chatbot does not check fit unless you paste the question.
• The college. A "why us" supplement is judged on whether it is about that college. A chatbot cannot tell a specific reason from a brochure line unless you give it the college's own pages.
• The rest of your file. Readers see your essay next to your activities, letters and transcript. The chat sees only what you paste.

So when a chatbot says "8/10," it is grading against criteria it made up for that answer. That is one reason the number can change from chat to chat.

Three prompts that critique, not write

These prompts ask for questions and quotations, not new sentences. Paste the prompt you are answering first, then your essay, then one of these.

1. The prompt-fit check.

List each thing this prompt asks me to do. For each one, quote the sentence in my essay that does it, or write NONE. Do not suggest new sentences.

2. The retell test.

In three sentences, tell me what this applicant did and what they seem to care about. Then list every claim in the essay that has no example behind it. Do not rewrite anything.

3. The name-swap test.

Quote any sentence that could appear unchanged in another applicant's essay about the same activity. For each, ask me one question that would help me make it specific. Do not answer the question for me.

For the same approach on graduate statements, see ChatGPT SOP prompts that critique, not write.

The prompt that crosses the line

Rewrite this paragraph to sound more impressive.

The output of that prompt is text a chatbot wrote. The Common App's fraud policy lists, as fraud, "Submitting plagiarized essays or other written or oral material, or intentionally misrepresenting as one's own original work: (1) another person's thoughts, language, ideas, expressions, or experiences or (2) the substantive content or output of an artificial intelligence platform, technology, or algorithm." Pasting a rewritten paragraph into your essay puts AI output into the text you certify.

Some colleges go further than the Common App. Brown's integrity page says "the use of artificial intelligence by an applicant is not permitted under any circumstances in conjunction with application content. While an applicant may use artificial intelligence to assist with spelling and grammar review, in the same way as any other platform that supports basic proofreading, the content of all essays, short-answer questions and any other material submitted by an applicant must be the work of that individual." Look up each college on your list in the college AI policy directory before you decide how to use any tool.

Constructed example: a critique exchange

Constructed example, written by us, not a real applicant statement and not output from any AI tool.

Student: Here is my essay. Quote the single least specific sentence and ask me one question about it. Do not rewrite it.

Reply: "Volunteering at the food bank opened my eyes to the struggles in my community." Question: what did you see on a specific day that you had not noticed before?

Student's own revision: The third Saturday, a man asked whether we had anything without peanuts, because his daughter's school had sent her home with a list.

The reply found the sentence and asked a question. The new sentence came from the student's memory, which is the part no chatbot can supply.

When a fixed rubric helps

A grade or a critique is only useful if the criteria behind it stay the same from one draft to the next. Then a change in the result means your draft changed, not the grader's mood.

That is the case for a published rubric. GradPilot's Common App essay review and UC PIQ review read each draft against public rubrics whose criteria are on the page before you paste anything, and a fixed-rubric essay grader is the quickest way to try one. For a side-by-side look at the AI review tools students use, see AI college essay reviewers compared.

Questions about ChatGPT grading college essays

Can ChatGPT rate my college essay?

It will give you a number, but one published test on school essays found its scores lower than human raters' and poorly matched to them. Run the three-chat test above before you trust any number it gives you.

Is ChatGPT accurate at grading essays?

Not compared with human raters, in the studies we found. One reported its scores "do not correlate well" with human scores; another found that "the results exhibit a regression effect." None of the studies used admissions essays.

What is the best ChatGPT prompt to grade a college essay?

A prompt that asks for quotations and questions instead of a grade. The three prompts above each forbid rewriting and make the chatbot point at your own sentences.

Is it allowed to paste my essay into ChatGPT for feedback?

It depends on the college. The Common App's clause is about what you submit. Some colleges, such as Brown, say AI use is "not permitted under any circumstances in conjunction with application content" apart from spelling and grammar review. Check each college's own page. For human readers and how to weigh them against an AI read, see how to get feedback on your college essay.

Get a free review of your Common App essay

Get a free Quick Review of your Common App essay against GradPilot's narrative craft rubric. It reads whether your essay picks one main moment, stays inside the scene, and uses details that change the story. Writing UC personal insight questions instead? The UC PIQ standout rubric reads whether each answer gives one clear central answer and backs it with your own experience.

For how colleges themselves rate essays, see how college essays are scored.

Sources

Retrieved October 30, 2026, except where noted.

• Anindita Kundu and Denilson Barbosa, "Are Large Language Models Good Essay Graders?", arXiv (submitted September 19, 2024): lower and poorly correlated scores; "not … an adequate replacement for human grading."
• Watheq Mansour, Salam Albatarni, Sohaila Eltanbouly and Tamer Elsayed, "Can Large Language Models Automatically Score Proficiency of Written Essays?", LREC-COLING 2024: prompt dependence, performance gap, feedback value.
• Wei Xia, Shaoguang Mao and Chanjing Zheng, "Empirical Study of Large Language Models as Automated Essay Scoring Tools in English Composition", arXiv (submitted January 7, 2024): "regression effect" on TOEFL independent writing essays.
• Common App, Fraud policy (page text served via the site's page data): the AI-output clause.
• Brown University, Integrity in the application process (no year stated): AI rule for application content.
• University of California, Personal insight questions (no year stated): 4 of 8 questions, 350-word limit.
• Common App, Essay prompts (2026–2027): seven prompts.