Compare and Contrast Essays: Grading The Polar Express Book Versus the Movie
Published on October 3rd, 2026 by the GraideMind team
Many teachers pair the picture book with the 2004 film directed by Robert Zemeckis and ask students to write a compare and contrast essay. The assignment works because the two versions differ in ways that students notice right away, such as the film's added adventures on the train and its named characters. It also tests a skill that appears on state standards in nearly every elementary grade.

The most common problem with these essays is that they become two separate summaries placed side by side. A student describes the book in one paragraph and the movie in the next without ever saying how they relate. Grading should therefore reward the connecting language, the sentences that say "in the book, but in the movie" and then explain why the difference matters.
Teaching a simple organizational choice before writing helps a great deal. Students can organize by topic, discussing the train, the bell, and the ending one at a time with both versions in each paragraph, or by version, covering the book first and then the film. Whichever structure they pick, the rubric should check that comparison appears throughout rather than only in the final sentence.
Choosing What to Compare
Students write stronger essays when they are limited to a handful of comparison points instead of everything they remember. The book is a short, quiet story built around a single moment of belief, while the film stretches the journey with action scenes and extra characters. Asking each writer to choose three points, such as characters, setting, and ending, keeps the essay focused and manageable.
- Characters: how the boy, the conductor, and the other children are shown in each version.
- Setting and mood: the quiet, dark pastel look of the book versus the animated spectacle of the film.
- Plot events: scenes that appear in only one version and what they add or remove.
- The bell: how each version handles who can hear it and what that means.
- Ending: how the story closes and how it leaves the viewer or reader feeling.
A comparison essay succeeds when the reader learns something from the differences, not just that they exist.
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Early drafts tend to list differences that are easy to spot, like the film being longer or having more color. Strong feedback asks why a difference matters, for example how the added train scenes change the pace or how a longer story affects the feeling of wonder. A prompt such as "What does the movie gain, and what does it lose?" invites analysis without giving the answer.
Teachers should also check for accuracy, since students sometimes blend details from both versions. Gentle corrections tied to the text, such as asking the writer to find the page that shows a particular scene, build habits of careful reading. This also reminds students that the book is a source they can return to and reread.
Grading Efficiently Across Multiple Classes
Because this assignment is common across a grade level, teams often grade a whole set of essays during a busy week before winter break. Agreeing on a shared rubric and scoring a few sample essays together keeps expectations aligned between classrooms. It also saves time, since students in every room can receive comments written in the same language.
AI grading assistance can reduce the workload further by checking each essay for the presence of transition language and balanced treatment of both versions. GraideMind lets a team load its shared rubric once and apply it across every class, which helps with consistency. Teachers can then spend their energy on the nuanced comments that help students go from listing differences to explaining them.
Using the Assignment to Teach Media Literacy
Comparing a book with its film adaptation opens a door to broader conversations about how stories change when they move between formats. Students can discuss why filmmakers add scenes and how music, color, and motion do work that words and still pictures do differently. These ideas fit neatly into media literacy goals that many schools now include in their English curricula.
A short reflection at the end of the essay can capture this thinking, asking which version the writer prefers and why. Because the answer is a matter of taste backed by reasons, it works as a gentle introduction to opinion writing. Teachers often find that this final paragraph is where students show their most original thinking.
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