If you read enough Hiroshima essays, you start to recognize the same thesis statements. "Hiroshima shows the terrible effects of the atomic bomb." "John Hersey uses vivid details to show suffering." They are true, and they are not arguable, which is the problem.

A thesis that no one could disagree with cannot drive an essay. It gives students nothing to prove, so the body paragraphs default to retelling the story. Fixing the thesis fixes a large part of the essay.

That makes thesis feedback the highest-value comment you can leave. But it is also easy to do poorly, by simply saying "make this more specific" without showing how. Students need a concrete path from a weak claim to a stronger one.

Here is an approach that works well in practice.

Name the Problem Precisely

Tell students exactly what is wrong with the current thesis. It might be a statement of fact, a restatement of the prompt, or a claim too broad to defend. Naming the type of problem gives them a way to think about the fix.

• If it states a fact, ask what a reader might disagree with or question.
• If it repeats the prompt, ask what the student's own answer is.
• If it names a technique, ask what that technique accomplishes.
• If it is too broad, ask which part of the book the student can prove.
• If it is strong, mark the words that make it arguable so students learn to repeat them.

Show a Before and After

Few things clarify a thesis faster than a side-by-side example. Take a common weak claim and revise it in front of students, explaining each change. For instance, moving from "Hersey uses details" to a claim about how his choice of details makes readers feel the human cost without being told.

Keep your examples different from the assigned prompt so students cannot copy them. The goal is to demonstrate the thinking, not to hand over a finished thesis. Students will apply the same moves to their own ideas.

Build Thesis Checks Into the Process

Do not wait until the final draft to look at theses. Ask students to submit a thesis and a brief outline early, and give quick feedback at that stage. It is far easier to fix a claim before a whole essay is built on top of it.

Quick thesis checks are a good use of AI feedback tools, since the software can review dozens of one-sentence claims almost instantly and flag those that restate facts or the prompt. You can then pull aside the students who need conversation. It turns a slow bottleneck into a routine step.

Celebrate the Strong Ones

When a student writes a genuinely good thesis, say so and explain why. Read a few aloud, anonymously, to show the class what the target looks like. Positive examples do more than a page of corrections.

Over the course of the unit, watch how the quality of opening claims shifts. If most students are still writing facts by the end, adjust your instruction. If most are arguing, you have built a skill that will serve them well beyond this book.