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Still, this level of accuracy was impressive because even teachers disagree on how to score an essay and one-point discrepancies are common. Exact agreement, which only happens half the time between human raters, was worse for AI, which matched the human score exactly only about 40 percent of the time. Humans were far more likely to give a top grade of a 6 or a bottom grade of a 1. ChatGPT tended to cluster grades more in the middle, between 2 and 5.
In essence, this comprehensive guide underscores the transformative potential of ChatGPT in essay grading, presenting it as a valuable approach in the ever-evolving educational fields. This post gives an overview; we next dig in a bit more, thinking about prompt engineering + providing examples to improve accuracy. Princeton no longer requires applicants to submit the optional writing section of the SAT or ACT (the SAT Essay or ACT Writing Test), because taking the test with the optional writing section adds an additional cost that may be a financial burden to some applicants. We became concerned that students at schools where the ACT or SAT is offered for free, but only without the optional writing section, would then need to pay to take the test with the optional writing section. Please review our . Most remarkably, the researchers obtained these fairly decent essay scores from ChatGPT without training it first with sample essays. That means it is possible for any teacher to use it to grade any essay instantly with minimal expense and effort. “Teachers might have more bandwidth to assign more writing,” said Tate. “You have to be careful how you say that because you never want to take teachers out of the loop.” Next Admit stuck with me as I sent essay after essay for review with such a small amount of turnaround time and I could never be more grateful for all the work they do. The feedback is both fair and kind, and I felt better trusting consultants that had just gone through the whole college admissions ordeal and gotten in rather than consultants who hadn’t been through the process in decades. The raters had been paid to score these 1,800 essays as part of three earlier studies on student writing. Researchers fed these same student essays – ungraded – into ChatGPT and asked ChatGPT to score them cold. ChatGPT hadn’t been given any graded examples to calibrate its scores. All the researchers did was copy and paste an excerpt of the same scoring guidelines that the humans used, called a grading rubric, into ChatGPT and told it to “pretend” it was a teacher and score the essays on a scale of 1 to 6. We also explored the reliability of ChatGPT’s grading, as compared to human grading. The moderate positive correlation of 0.62 attests to same consistency between human grading and ChatGPT’s evaluations. The classification results reveal that the model achieves an accuracy of approximately 84%, and the Cohen’s Kappa value of 0.71 indicates substantial agreement beyond what would be expected by chance alone. See the related study (Kim et al., 2024) for more on this.
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Tate said ChatGPT was “roughly speaking, probably as good as an average busy teacher” and “certainly as good as an overburdened below-average teacher.” But, she said, ChatGPT isn’t yet accurate enough to be used on a high-stakes test or on an essay that would affect a final grade in a class.
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Earlier robo graders could also be gamed, once a student understood the features that the computer system was grading for. In some cases, nonsense essays received high marks if fancy were sprinkled in them. ChatGPT isn’t grading for particular hallmarks, but is analyzing patterns in massive datasets of language. Tate says she hasn’t yet seen ChatGPT give a high score to a nonsense essay.
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Tamara Tate, a researcher at University California, Irvine, and an associate director of her university’s Digital Learning Lab, is studying how teachers might use ChatGPT to improve writing instruction. Most recently, Tate and her seven-member research team, which includes writing expert Steve Graham at Arizona State University, compared how ChatGPT stacked up against humans in scoring 1,800 history and English essays written by middle and high school students.
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Hi Ambrose! This is a thoughtful essay in which you discuss how your family’s legacy has impacted your sense of identity and how you overcame the burden of their expectations. For those reasons, this topic has promise to be a compelling personal statement. However, your essay requires some edits to achieve that promise. First, I recommend that at the end of your second paragraph, you add more detail as to why that conversation with your father was so pivotal, as it significance is currently ambiguous to the reader.
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Tate expects ChatGPT’s grading accuracy to improve rapidly as new versions are released. Already, the research team has detected that the newer 4.0 version, which requires a paid subscription, is scoring more accurately than the free 3.5 version. Tate suspects that small tweaks to the grading instructions, or prompts, given to ChatGPT could improve existing versions. She is interested in testing whether ChatGPT’s scoring could become more reliable if a teacher trained it with just a few, perhaps five, sample essays that she has already graded. “Your average teacher might be willing to do that,” said Tate.