Make evidence do work in the argument

CHAPTER 3

Make evidence do work in the argument

Evidence does no argumentative work by itself. A quotation or fact earns its place when the writer explains what it proves and how it advances the claim. That same connection is tested in multiple-choice reasoning and in Row B of the free-response rubric.

Separate a claim from its support

A claim is the position a writer is asking a reader to accept. Evidence is the specific material, a quotation, a fact, an example, offered to support that claim. The two are easy to confuse because they often sit in the same sentence, but a reading or writing question usually depends on telling them apart.

“What, to the American slave, is your Fourth of July? I answer: a day that reveals to him, more than all other days in the year, the gross injustice and cruelty to which he is the constant victim.”

Frederick Douglass, “What to the Slave Is the Fourth of July?” 1852

The question itself is not a claim. Douglass's answer is the claim: that the holiday reveals injustice rather than commemorating shared freedom. Everything that follows in the speech functions as evidence and commentary supporting that one claim. If a question asks you to identify the passage's central claim, the answer is the assertion being defended, not the topic it happens to mention.

See where commentary begins

Commentary is the sentence or sentences that explain what a piece of evidence proves and why it matters to the claim. Evidence without commentary is a fact sitting next to an argument, not inside it. Consider this two-sentence example.

The exam reduced multiple-choice questions from five answer choices to four beginning with the 2025 administration. This shows the exam changed.

The first sentence is evidence: a specific, verifiable fact. The second sentence gestures at commentary but does not deliver it. “This shows the exam changed” restates that something happened without explaining what the change means for a student's preparation. Commentary has to do more than confirm that the evidence exists.

Write the missing connection

Real commentary names the mechanism: why does this fact matter, and what does it change for the argument being made? Compare the weak version above with a repaired version of the same evidence.

The exam reduced multiple-choice questions from five answer choices to four beginning with the 2025 administration. Because each current question has four options, older five-choice sets do not reproduce the current decision environment or guessing probability. A student can still learn from an older passage, but the item format is no longer an exact simulation.

The repaired commentary does not just confirm the fact. It states a consequence that follows from the fact, one specific enough that a reader understands why the claim about outdated practice materials is true.

Track what a paragraph contributes

A paragraph earns its place in an essay or a passage by doing a specific job: introducing the claim, supplying the strongest piece of evidence, addressing an objection, or extending the claim to a new example. When you read a paragraph, ask what job it is doing rather than what topic it mentions. Two paragraphs can mention the same subject and still be doing entirely different work inside the larger argument.

Build a visible line of reasoning

A line of reasoning is the sequence that connects a writer's claims to the thesis, paragraph by paragraph. It becomes visible when each paragraph's job depends on the one before it: a claim is introduced, evidence supports it, a complication is addressed, and a conclusion follows from what has already been established. A reader should be able to state, after each paragraph, what the essay has accomplished so far and what remains to be shown.

Douglass's speech builds its line of reasoning by moving from a direct question, to a blunt answer, to specific evidence of the gap between the holiday's stated meaning and an enslaved person's actual experience of it. Each part depends on the part before it. Removing the opening question would leave the answer without its provocation. Removing the answer would leave the evidence without a claim to support.

Recognize evidence that does not reach the claim

Evidence can be accurate and still fail to support the specific claim it is attached to. A common version of this problem appears when a writer proves a narrower or broader point than the one the paragraph actually needs. If a paragraph claims that a policy improved outcomes for a specific group, a statistic about outcomes for a much larger population does not, by itself, support that narrower claim. The evidence has to match the scope of the claim it is defending.

Repair the phrase ‘this shows’

“This shows” is not a diagnosis on its own. It is a placeholder for reasoning that has not been written yet. Whenever that phrase appears in a draft, the next step is asking what, specifically, the evidence demonstrates, and replacing the placeholder with that answer. “This shows the exam changed” becomes usable only once it says what the change means and for whom.

Carry the reasoning across more than one paragraph

A single strong paragraph is not the same as a sustained line of reasoning. The current free-response rubric rewards evidence and commentary that stays consistent across the entire response, not just in one well-developed section. Connecting each paragraph's evidence back to the thesis keeps a response coherent from the first sentence to the last.

CONSTRUCTED-RESPONSE DRILLS

Drill 1: Repair the commentary

Students who practiced with timed writing sections improved their pacing. This shows practice matters.

Rewrite the second sentence so it explains what the evidence demonstrates and why, instead of restating that something occurred.

Model reasoning: A repaired version might read: “Because pacing is a skill that develops through repetition under real time constraints, students who only study content without practicing under timed conditions may know the material but still run out of time on exam day.” The repair names the mechanism connecting practice to improved pacing rather than simply asserting that practice matters.

Drill 2: Repair the commentary

The synthesis prompt requires at least three sources. This shows sources are important.

Rewrite the second sentence so it explains a specific consequence of the three-source requirement, instead of making a vague claim about importance.

Model reasoning: The three-source requirement is not just a suggestion to “use more evidence.” It is built into Row B. Referencing fewer than two provided sources earns 0 in Row B. Evidence from at least two sources can reach 1 point. From Row B 2 through Row B 4, the response must use at least three provided sources. Once that threshold is met, the higher scores depend on the line of reasoning and the quality and consistency of explanation, not simply on adding more sources.

Drill 3: Map the line of reasoning

A four-paragraph passage argues that a city should expand its public library hours. Paragraph 1 states the claim. Paragraph 2 cites evidence that evening visits have increased. Paragraph 3 acknowledges the cost of extended staffing. Paragraph 4 proposes a phased schedule as a response to that cost. In one sentence per paragraph, state the job each paragraph is doing in the line of reasoning.

Model reasoning: Paragraph 1 introduces the claim. Paragraph 2 supports the claim with evidence of demand. Paragraph 3 addresses the strongest likely objection to the claim. Paragraph 4 resolves that objection with a specific proposal, which allows the essay to end on a strengthened version of the original claim rather than leaving the objection unanswered.

Drill 4: Map the line of reasoning

Reread the Douglass excerpt above. In one sentence, state what job the rhetorical question “What, to the American slave, is your Fourth of July?” performs in the line of reasoning, separate from the claim that answers it.

Model reasoning: The question performs the job of exposing an assumption the audience may be holding, that the holiday means the same thing to every listener, so that the answer which follows can directly contradict that assumption rather than arguing against a position no one in the audience realized they held.

CHAPTER 3 PRACTICE

Answer all eight questions before checking explanations. Each question has exactly one correct answer.

ANSWERS AND EXPLANATIONS