Claims & Evidence

What this unit covers

The topics below follow the published English Lang course framework for Unit 2. This unit is worth 11–14% of the exam, so budget your time against that rather than against how long the unit takes to teach.

Lessons in this unit

• Thesis & Defensible Claims13 min · 3 objectivesWrite a defensible thesis that states a position rather than a fact · Distinguish claims of fact, value, and policy · Revise a vague or self-evident thesis into an arguable one
• Selecting & Integrating Evidence14 min · 3 objectivesChoose evidence that is relevant, specific, and sufficient for a claim · Integrate quotations and details smoothly rather than dropping them in · Recognize when evidence is cherry-picked or fails to support the claim
• Reasoning & Commentary14 min · 3 objectivesExplain the role of commentary in linking evidence to a claim · Identify the unstated assumption (warrant) that connects evidence and claim · Strengthen an argument by making its reasoning explicit

Every term in Unit 2

All 29 terms we publish for Claims & Evidence, with definitions. Reading them through is the fastest way to find the ones you cannot define — then drill those in cram mode until you can produce them without the prompt.

Commentary

The explanation of how evidence supports the claim. This is where AP Lang essays are won or lost, and where most students under-write.

Concession and refutation

Granting part of the opposing view, then showing why it does not defeat your claim. Strengthens ethos by proving the writer has understood the objection rather than dodged it.

Line of reasoning

The sequence of claims that carries a reader from the thesis to the conclusion. Each paragraph should advance it. Rubric Row B is lost most often when evidence appears without the reasoning that links it.

Defensible thesis

A claim a reasonable person could dispute and you could support. Not a restatement of the prompt, not a summary, not “there are many rhetorical devices in this passage.”

Claim of fact, value and policy

Fact claims assert what is true, value claims what is good, policy claims what should be done. Different claim types require different evidence.

Nested claims

A thesis is supported by sub-claims, each with its own evidence. Weak essays support the thesis directly from three unconnected examples.

Evidence that fits the claim type

A policy claim needs feasibility and consequence evidence, not just data showing a problem exists. Mismatch here is a common and invisible failure.

Precision of evidence

A specific number, name or date carries more weight than a general reference to studies. Vagueness reads as unwillingness to be checked.

Representative anecdote

A single story used to stand for a pattern. It is persuasive and weak, and analysis should name both properties.

Expert testimony: what makes it strong

Relevant expertise, absence of conflicting interest, and agreement with the wider field. One dissenting expert is evidence of dissent, not of the claim.

Historical analogy

Comparing a present case to a past one. Its strength depends entirely on the relevant similarities, and its weakness is the differences the writer omits.

Hypothetical example

An invented case used to isolate a principle. Legitimate for clarifying a definition; illegitimate as evidence that something actually happens.

Definition as an argumentative move

Whoever defines the key term has usually won. Watch for a definition offered early and then relied on as though it were neutral.

Concession that costs something

Granting a point that genuinely damages part of your case, then showing the conclusion survives. Conceding a trivial point is a rhetorical gesture, not a concession.

Refutation strategies

Deny the evidence, deny the reasoning, deny the relevance, or accept it and outweigh it. Naming which strategy a writer used is more precise than "he refutes it".

Rogerian approach

State the opposing view so fairly its holders would accept the summary, then find common ground before arguing. Effective for hostile audiences.

Burden of proof

The side asserting change usually carries it. A writer who shifts the burden onto their opponent has made a move worth naming.

Evidence a writer chose not to use

Absences are analyzable. A policy argument that never mentions cost is making a choice about what the audience should weigh.

Quantifying without misleading

Percentages without base numbers, and raw numbers without context, both mislead. A writer who supplies both is signaling good faith.

Claim

A statement requiring support that a reasonable person could dispute. If nobody would disagree, it is an observation rather than a claim.

Thesis

The central claim, stated so the reader knows what the whole text will argue. A defensible thesis takes a position rather than announcing a topic.

Evidence

The specific material supporting a claim — quotation, statistic, anecdote, analogy. Its relevance must be explained rather than assumed.

Quantitative evidence

Data and statistics, persuasive to sceptical audiences but easily distorted by selective framing or a misleading baseline.

Anecdotal evidence

A specific story. Powerful for making an abstraction vivid, weak as proof of a general pattern.

Analogy as evidence

Argues that what holds in a familiar case holds in an unfamiliar one. Persuasive only where the two cases are alike in the relevant respect.

Qualifying a claim

Using "often", "in most cases" or "under these conditions" to make a claim more defensible. Precision reads as sophistication, not as weakness.

Counterargument

The strongest opposing case, engaged honestly. Addressing a weak version instead is the straw man fallacy.

Credibility of a source

Judged by expertise, potential bias, recency and whether the claim is corroborated. Relevant to using evidence and to analyzing how others use it.

Sufficiency of evidence

Whether there is enough of the right kind. One example can illustrate a claim but rarely establishes a trend.

What examiners penalize here

• On both the argument and synthesis essays, the AP rubric awards a **thesis point** only for a claim that "responds to the prompt with a defensible position." A thesis that restates the prompt or lists topics without a stance earns nothing. Always take a side you could lose.
• AP readers distinguish essays that "provide evidence" from those that use "**specific** evidence." Vague gestures ("studies show," "many people believe") stall your score. Name the study, the number, the concrete detail. Specificity is what moves an essay up the evidence-and-commentary row.
• The AP evidence-and-commentary row tops out only when commentary "consistently explains how the evidence supports the line of reasoning." Aim for a **2:1 commentary-to-evidence ratio** — after every quote, out-explain it. Listing evidence caps your score; explaining it uncaps it.

Practice English Lang

Our practice bank is drawn from across the whole course rather than filtered to one unit, which is closer to how the exam asks anyway — it will not tell you which unit a question is testing.

Questions about this unit

All 5 units of AP English Language & Composition

1. Unit 1 · Rhetorical Situation
2. Unit 2 · Claims & Evidence
3. Unit 3 · Reasoning & Organization
4. Unit 4 · Style
5. Unit 5 · Synthesis & Argument