Tom Joad's character arc is arguably the clearest through-line in The Grapes of Wrath, moving from a man focused narrowly on his own parole and his own family's survival to someone who, by the novel's famous "I'll be there" speech, has absorbed Jim Casy's collectivist philosophy as his own. Essays tracking this transformation are a staple assignment, and they reveal a lot about how carefully a student read the middle chapters where the shift actually happens.

Weaker essays tend to jump straight from Tom's introduction to his final speech, treating the transformation as a given rather than tracing the specific moments and conversations that produce it. This usually means skipping over Casy's role almost entirely, which is a significant gap given how directly Tom's final philosophy echoes Casy's earlier ideas.

A stronger essay identifies at least two or three intermediate stages in Tom's thinking, his initial resistance to Casy's ideas, a turning point (often located around Casy's death), and the gradual articulation of his own version of that philosophy, rather than treating the change as instantaneous.

This kind of essay also offers a natural opportunity to assess whether students understand cause and effect in character development, not just plot sequence, which is a skill that transfers well beyond this particular novel.

Tracking the Stages of Change

A useful framework for both teaching and grading this essay divides Tom's arc into three phases: the self-interested parolee focused on staying out of trouble, the loyal family man willing to break parole for the family's sake, and the emerging collectivist who commits to a cause larger than his family after Casy's death. Essays that name and evidence all three stages are doing substantially more analytical work than ones that only address the first and last.

• Tom's initial caution about violating parole in the early chapters
• His willingness to risk everything for family loyalty during the migration
• His resistance to and gradual absorption of Casy's collectivist ideas
• The turning point at Casy's death and Tom's act of retaliation
• The final speech as the culmination of a philosophy, not a sudden conversion

Grading for Cause and Effect, Not Just Chronology

The rubric for this essay type should specifically reward causal reasoning, explaining why a given event or conversation moves Tom toward his final position, rather than just listing events in the order they occur. A chronological summary of Tom's actions is not the same as an argument about his transformation.

This distinction is worth naming clearly in feedback when it's missing: "you've listed what Tom does at each stage, now explain what specifically pushes him from one stage to the next."

Connecting Tom's Arc to the Novel's Ending

Because Tom disappears from the novel's final chapters after his speech to Ma, some students struggle to connect his arc to the novel's actual ending, which centers on Rose of Sharon instead. Strong essays address this gap directly, arguing that Tom's transformation sets up the novel's final act of collective compassion even though he's physically absent from it.

This connection is a good marker of a student reading the novel as a unified whole rather than as a sequence of disconnected character studies, and it's worth calling out explicitly when an essay makes that link well.

Sequencing This Essay Within a Larger Unit

Assigning this essay after Casy's death but before the novel's final chapters lets students write while the turning point is still fresh, and it sets them up to revisit Tom's arc in a later, broader essay on the novel's themes without having to relearn the material from scratch.

For teachers grading a full class set, keeping a quick reference of which stage each essay stops at, does it stop at the turning point, or push through to the final speech, gives a fast way to spot who's behind on the reading before the unit's culminating assessment.