Ask a class whether Marlow is a reliable narrator and you will get answers ranging from a confident yes to a confident no. The question is a good one because the novella does not settle it. Grading the essays that follow requires deciding what you are actually rewarding.

The first thing to check is whether the student understands the structure. Heart of Darkness is not told directly by Marlow. An unnamed narrator on the Nellie relays what Marlow says, which means the reader is always hearing a story about a story.

Many essays collapse this structure and treat Marlow's views as Conrad's. That is the most frequent error in this topic, and it undermines the rest of the argument. A rubric criterion on the distinction between author, narrator, and frame speaker is worth including.

It also helps to define "unreliable" for students. In its strict sense, it means the narrator's account cannot be trusted on the facts. Marlow is more often unreliable in his judgments than in what he reports, and strong essays notice that.

Evidence that supports a claim about reliability

Students can draw on several kinds of evidence: Marlow's admissions that he cannot fully convey his experience, his prejudices, his fascination with Kurtz, and his decision to lie at the end. The best essays weigh these against one another rather than piling them up. They also acknowledge moments that make Marlow seem trustworthy, such as his frank criticism of the Company.

• Identifies the frame narrator and explains why the layering matters
• Separates Marlow's opinions from the events he reports
• Uses the lie to the Intended as evidence, with attention to its motives
• Considers moments that increase as well as decrease trust
• Reaches a position that the essay's evidence actually supports

Scoring papers that disagree with you

Some students argue that Marlow is thoroughly reliable, and others that he is deeply compromised. Either can be defended. Score the quality of the reasoning and the fit between claim and evidence, and resist the pull of your own interpretation.

A neutral rubric helps. Criteria built around evidence, counterargument, and accurate reading of the frame give you a common standard for very different conclusions.

Feedback that sharpens the argument

Comments that ask for complication tend to be the most productive. "You say Marlow can be trusted; how do you account for his remark that women are out of touch with truth?" gives the student a specific challenge. The response, whether a defense or a revision, will improve the paper.

AI feedback can draft questions of this kind when it is working from a well-written rubric. GraideMind is one option for teachers who want a first pass tied to their own criteria, with the final wording left to the instructor.

Connecting the topic to wider skills

Work on narrator reliability transfers well. Students who learn to question the source of a story become better readers of memoir, journalism, and history. It is worth telling them so.

That larger payoff also makes the assignment easier to justify to skeptical students. They are not only analyzing a nineteenth-century novella but practicing a habit of mind they will use elsewhere.