Denis Villeneuve's recent adaptations have sent many students back to Herbert's novel, or at least made them curious about it. That makes book-versus-film essays an easy sell. It also makes them easy to write badly.

The typical weak essay lists differences: this scene was cut, that character was changed. A list of differences is a fact sheet. An essay worth a strong grade explains what those changes do to the story.

Adaptation is a useful lens because every change is a choice. Students can ask why a filmmaker would keep a scene, drop an internal monologue, or shift the emphasis of a character.

Your rubric needs to reward that kind of reasoning and avoid rewarding simple spotting of differences.

Moving students from differences to effects

Teach a simple pattern: notice a change, name the choice, explain the effect. A film can convey a character's thoughts through a look instead of narration, and that changes how the audience relates to the character. Students who write in this pattern produce far stronger essays.

• Identify a specific change between the novel and the film
• Describe the medium-specific reason a filmmaker might make it
• Explain how the change alters meaning or tone
• Support the point with a detail from both versions
• Judge whether the change strengthens or weakens the story

Adding a media analysis criterion

Include a rubric row for understanding of the medium. Strong essays mention things like pacing, visual design, sound, or performance as tools that the novel does not have. That criterion rewards students who treat film as its own art form.

Keep the text-based criteria too. Students should still cite the novel accurately, and they should not lean on the film as their only source.

Watching for shortcuts

Some students will watch the film and skip the book. Prompts that require specific passages or page references make that visible.

You can also ask for a brief note on which scenes in the novel the student found hardest to picture, which is difficult to answer without actually reading it.

Speeding up feedback on comparison essays

Compare and contrast essays are repetitive to grade because the same weakness, lists without conclusions, appears in so many papers. A rubric-based feedback tool can flag it automatically across the whole class.

That leaves you free to engage with the more interesting arguments, like a student who claims a film sacrificed the book's ambiguity for spectacle.