After grading enough essays on Peace Like a River, a teacher starts to notice the same handful of problems recurring across otherwise very different students and very different prompts. Some of these mistakes are structural, showing up in how an essay is organized, while others are interpretive, reflecting a misreading of a specific scene or character. Recognizing these patterns in advance lets a teacher build targeted mini-lessons before the writing stage rather than discovering the same issues, essay after essay, once grading has already begun. It also makes feedback faster to write, since a teacher can draw on a familiar, well-tested explanation rather than composing a new one for each paper.

The most common mistake by far is drifting into plot summary disguised as analysis, particularly once students reach the road trip chapters, which contain enough incident to fill several paragraphs without a single sentence of actual argument. A student might spend an entire body paragraph recounting the encounter with Jape Waltzer's associates without ever stating what that scene reveals about the essay's thesis. The fix is rarely telling students to "add more analysis," since that phrase means little on its own; it works better to show students a side-by-side example of a summary sentence and an analytical sentence built from the same piece of evidence.

A second common error is treating the miracles in the novel as straightforward proof of a single thematic claim, when Enger's handling of them is actually more ambiguous than students initially assume. Students often argue that the miracles simply confirm the novel endorses faith, without grappling with the fact that Reuben, as narrator, occasionally hedges or questions his own account of events. This flattening of ambiguity produces essays that feel confident on the surface but miss some of the novel's more interesting tension. Pushing students to address at least one moment of narrative doubt, rather than treating every miracle as settled fact, usually produces a more sophisticated essay.

Structural Problems That Undercut Strong Ideas

Even students with genuinely interesting ideas about the novel often undermine those ideas with weak paragraph structure, particularly by opening body paragraphs with a piece of evidence rather than a topic sentence that frames what the paragraph is about to argue. This forces the reader to reconstruct the paragraph's purpose after the fact instead of following a clear line of reasoning from the start. A simple fix is requiring students to draft a topic sentence for each body paragraph before selecting supporting evidence, reversing the order in which many students naturally work. This small change in drafting order tends to produce noticeably more organized essays without requiring any additional instruction on the content itself.

• Sliding from analysis into plot summary during the road trip chapters.
• Treating every miracle in the novel as unambiguous confirmation of faith.
• Opening body paragraphs with evidence instead of a clear topic sentence.
• Ignoring Reuben's narrative unreliability when making claims about events.
• Writing a conclusion that merely restates the introduction word for word.

Misreadings That Weaken an Otherwise Solid Argument

Some mistakes are less about writing craft and more about a genuine misreading of the text, which is harder to catch with a generic writing rubric and requires the teacher's own familiarity with the novel. A common example is students describing Jape Waltzer purely as a cartoonish villain, missing the more unsettling implications of how ordinary and even charming he can appear before his violence surfaces. Another is misreading Swede's westerns as unrelated interludes rather than as a running commentary on the novel's own plot, particularly its treatment of justice delivered outside the law. Flagging these misreadings directly, rather than simply marking the paragraph weak, helps students see exactly where their interpretation went off track.

Conclusions present a smaller but still frequent problem, since many students treat the final paragraph as a formality rather than an opportunity to extend the argument. A conclusion that simply restates the thesis and summarizes each body paragraph in order adds little value and often reads as an afterthought tacked on to meet a length requirement. Encouraging students to use the conclusion to address a complication or counterargument, such as acknowledging that the novel's ending leaves some of its central questions unresolved, tends to produce a stronger final impression without requiring significant additional writing.

Building Feedback That Prevents the Same Mistakes Next Time

Feedback that simply labels a problem, such as writing "too much summary" in the margin, rarely changes a student's behavior on the next essay, because it identifies the symptom without showing the underlying fix. More effective feedback names the specific sentence where summary takes over and offers a brief model of what an analytical version of that same sentence might look like. This takes more time per essay initially, but a teacher who keeps a small bank of these model corrections for the most common errors on this novel can reuse them across many students, which speeds up the process considerably after the first few essays.

Some teachers now use AI-assisted feedback tools to flag likely instances of plot summary or thin analysis before the essays reach the teacher's desk, using the flags as a starting point for a closer read rather than a final judgment. This can be particularly useful for the summary-versus-analysis problem, since it is a pattern that shows up consistently enough across student writing to be detected reliably, freeing the teacher's own attention for the subtler misreadings that require real familiarity with the text. The goal is not to remove the teacher's judgment from the process but to spend less of it on catching the same predictable errors essay after essay.

Turning Common Mistakes Into a Pre-Writing Lesson

Once a teacher has graded this novel enough times to know the recurring patterns, the most efficient move is to turn that knowledge into a short lesson delivered before students draft rather than feedback delivered after. Showing students an anonymized example of a paragraph that slides into summary, alongside a revised version that stays analytical, tends to prevent the mistake more effectively than any amount of after-the-fact correction. The same approach works for the misreading of Jape Waltzer or the flattening of the novel's miracles: naming the trap explicitly, before students fall into it, changes the quality of the first draft rather than just the quality of the revision.

Over time, this kind of preventive teaching also reshapes what class discussion looks like, since students who have been warned about a specific misreading tend to raise it themselves during discussion, testing their own interpretation against the group before committing it to an essay. A class that has already argued out whether Swede's westerns comment on the main plot will produce far fewer essays that ignore the connection entirely. This is ultimately the most efficient use of a teacher's accumulated grading experience: converting a list of past mistakes into future prevention rather than repeating the same corrections semester after semester.