Unsupported claims are among the most common problems in student essays, and also among the most frustrating to comment on. A teacher circles a sentence, writes "evidence?" next to it, and the student interprets this as a vague accusation rather than a specific instruction. The themes in unSpun, particularly the idea that every claim deserves a question about where it came from, offer a useful way to make this feedback sharper.

Before writing comments, it helps to diagnose why the claim is unsupported. Some students make a bold assertion because they assume it is common knowledge, while others cite a source but fail to connect it to the claim. Still others rely on a personal story that cannot carry the weight of a general conclusion, and each cause calls for a different response.

Good feedback names the diagnosis and then offers a path forward. If the claim is a statistic with no source, the comment can ask the student to identify who collected the number and when. If the claim relies on an anecdote, the comment can ask what larger pattern the anecdote is meant to represent and how the student could show that pattern exists.

Comment Starters That Work

Comments that begin with a question tend to be received better than those that begin with a verdict. A question like "where did this figure come from?" invites the student to investigate, while a statement like "unsupported" invites defensiveness. Over time, students begin asking these questions of themselves while drafting, which is the real goal of the feedback.

• Where does this number come from, and who measured it?
• Is this one example, or can you show it happens often?
• What would someone who disagrees say about this source?
• Does your evidence prove the claim or only fit with it?
• Can you quote the exact wording that supports this point?

Show Weak and Strong Versions Side by Side

Students learn quickly from contrast, so include a brief before-and-after example in your comment when a claim needs rework. A weak version might say that most teenagers spend too much time online, while a stronger version would specify which survey, which age group, and what the actual finding was. Seeing the transformation makes the abstract advice about specificity feel achievable.

You do not need to do this for every instance in an essay. Choose the two or three most significant unsupported claims and model the revision for those, then ask the student to apply the same approach to the rest. This keeps your workload reasonable and places responsibility for improvement where it belongs.

Keep a Personal Comment Bank

If you find yourself writing the same explanation repeatedly, save it. A personal bank of well-written comments, organized by problem type, lets you respond with care while moving quickly. The key is to adapt each comment to the student's specific sentence rather than pasting it blindly, so it still feels like it was written for that paper.

AI grading tools can speed this up further. GraideMind, for instance, can draft criterion-based comments that reference the actual text of the essay, which you can then revise to match your voice. This is especially helpful during heavy grading periods when fatigue tends to make comments terse and less useful.

Follow Up With a Revision Task

A comment only helps if the student acts on it, so pair feedback with a small revision task. Ask them to choose one unsupported claim, find a credible source, and rewrite the sentence with the evidence integrated. A twenty-minute exercise like this builds the habit far more effectively than a lengthy note ever could.

Track whether the same problem recurs across assignments. If a student keeps making unsupported claims despite repeated feedback, the issue may be deeper than carelessness, perhaps a misunderstanding of what counts as evidence. A short conference can often resolve what several rounds of written comments could not.