Supporting a Claim — Choose a detail that best supports a...

SECTION 1

Why Evidence Matters in Writing

People have been making arguments and backing them up with proof for thousands of years. In ancient Greece, a teacher named Aristotle taught his students that a good argument needs more than just an opinion. He said you need logos (logical evidence) to convince people. That idea still shapes how we read and write today.

Over time, writers, teachers, and test makers all agreed on one thing: a strong claim (a statement that takes a position) is only as powerful as the evidence behind it. On the SHSAT, you will see questions that ask you to pick the detail that best supports a claim in a passage. Let's look at how this skill developed.

~350 BCE

Aristotle's Rhetoric

Aristotle teaches that persuasive writing needs logical proof—facts, examples, and data—not just opinions.

1800s

Modern Essay Structure

Schools begin teaching the claim-and-evidence paragraph model that students still use today.

1971

SHSAT Introduced

New York City launches the Specialized High School Admissions Test, requiring students to analyze passages and identify supporting details.

2017

SHSAT Revising/Editing Section Added

The test adds a Part A section that directly asks students to choose the best supporting detail for a claim in a passage.

So here is the big question this lesson answers: When you read a passage with a claim, how do you figure out which detail is the strongest evidence for that claim? By the end of this lesson, you will have a clear, repeatable method.

SECTION 2

Core Principles of Supporting a Claim

Before you can pick the best supporting detail, you need to understand a few key ideas. Think of these as the rules of the game.

Claim

A claim is a statement that takes a position or makes an argument. It tells the reader what the writer believes. Example: "School lunches should include more fresh fruit."

Supporting Detail

A supporting detail is a fact, example, statistic, or reason that proves or strengthens the claim. It answers the question: "Why should I believe this?"

Relevance

A detail must be relevant (directly connected) to the claim. A detail about pizza prices does NOT support a claim about fresh fruit.

Specificity

The best supporting detail is specific rather than vague. "Studies show fruit boosts energy by 20%" is stronger than "Fruit is good for you."

Direct vs. Indirect Support

A direct detail proves the claim head-on. An indirect detail is loosely related but does not prove the point. Always pick the direct one.

✦ KEY TAKEAWAY

Think of a claim like the roof of a house. Supporting details are the pillars holding it up. If a pillar is too thin (vague), too far away (irrelevant), or made of the wrong material (off-topic), the roof will wobble. You want the strongest, closest pillar—that's your best supporting detail.

SECTION 3

How Claims and Details Connect

The diagram below shows how a claim sits at the top and different details connect to it. Notice how the best supporting detail has a thick, solid line going straight to the claim. Weaker or off-topic details have thinner or dashed lines.

Detail A is the strongest because it is both specific (includes a percentage) and relevant (directly about fruit and student performance). Detail B is related but too vague. Detail C is completely off-topic.

When you face this type of SHSAT question, picture this diagram in your mind. Draw an imaginary line from each answer choice to the claim. Which line is the thickest and straightest? That is your answer.

SECTION 4

The 3-Step Method for Choosing the Best Detail

You don't need a formula for this skill, but you do need a clear method. Follow these three steps every time you see a "best supports" question on the SHSAT.

Step 1 — Identify the Claim

Read the question carefully. It will usually point you to a specific sentence in the passage. Underline or circle that sentence. Ask yourself: "What is the writer trying to prove?" Restate the claim in your own words.

Step 2 — Test Each Answer Choice

For each answer choice, ask two questions. First: "Is this detail relevant to the claim?" If the answer is no, cross it out right away. Second: "Does this detail directly prove the claim, or is it just loosely connected?" Cross out any detail that is only loosely connected.

Step 3 — Pick the Most Specific, Direct Detail

If two choices are both relevant, pick the one with the most specific evidence—numbers, expert quotes, named studies, or concrete examples beat general statements every time.

💡 SHSAT TIP

The SHSAT will often include one answer that is true but off-topic, one that repeats the claim instead of supporting it, and one that is too vague. Knowing these traps helps you eliminate wrong answers fast.

Follow these three steps—Identify, Test, Pick—every time you see a supporting-detail question.

SECTION 5

Types of Supporting Details

Not all details are created equal. Writers use different kinds of evidence to support their claims. Knowing the types helps you judge which detail is the strongest.

Types of supporting details ranked from strongest to weakest.

Type of Detail	What It Looks Like	Strength
Statistic / Data	Numbers, percentages, measurements. "72% of students reported..."	Very Strong
Expert Quote / Source	A named researcher, doctor, or organization says something. "According to Dr. Lee..."	Very Strong
Specific Example	A named case, event, or place. "In Portland, Oregon, a new program..."	Strong
Reason / Explanation	A logical "because" statement. "This works because sunlight triggers vitamin D production."	Moderate
General Statement	A broad idea with no specifics. "Many people think this is a good idea."	Weak

Supporting Detail Strength Spectrum

Statistic

Expert

Example

Reason

General

StrongestWeakest

On the SHSAT, the correct answer is almost always a statistic, expert quote, or specific example. If you see one of those in the answer choices and it is relevant to the claim, that is usually the winner.

SECTION 6

Worked Example — Step by Step

Let's walk through a sample SHSAT-style question together. Read the mini-passage below, then follow the 3-Step Method.

📖 SAMPLE PASSAGE (excerpt)

(1) Community gardens are becoming more popular in cities across the United States. (2) These gardens provide important health benefits to the people who use them. (3) Neighbors often gather at the gardens to share recipes and tips. (4) A 2021 study by the University of Pennsylvania found that people living near community gardens had a 20 percent lower risk of heart disease. (5) Many cities have offered grants to help start new gardens. (6) The colors and scents of the flowers attract butterflies and bees.

❓ QUESTION

Which sentence best supports the claim made in sentence 2? A) Sentence 1 B) Sentence 3 C) Sentence 4 D) Sentence 6

Solving with the 3-Step Method

Step 1 — Identify the ClaimSentence 2 says: "These gardens provide important health benefits to the people who use them." In your own words, the claim is: Community gardens are good for people's health.

Claim identified: gardens → health benefits.

Step 2 — Test Each Answer ChoiceSentence 1: "Community gardens are becoming more popular..." This is about popularity, not health. Not relevant — eliminate. Sentence 3: "Neighbors often gather to share recipes and tips." This is about socializing, not health. Not directly relevant — eliminate. Sentence 4: "A 2021 study by the University of Pennsylvania found that people living near community gardens had a 20 percent lower risk of heart disease." This is about health—with a specific study, source, and number. Relevant + specific + direct. Keep! Sentence 6: "The colors and scents of the flowers attract butterflies and bees." This is about nature and insects, not human health. Off-topic — eliminate.

Only Sentence 4 remains.

Step 3 — Confirm the Best ChoiceSentence 4 includes a named source (University of Pennsylvania), a year (2021), and a specific number (20 percent lower risk of heart disease). It directly proves that community gardens benefit health.

Answer: C) Sentence 4

SECTION 7

Common Traps vs. Winning Answers

The SHSAT test makers are clever. They design wrong answers that look tempting. Let's compare what a trap looks like versus what a winning answer looks like.

Four trap types and how to spot each one.

Trap Type	What It Does	How to Spot It
True but Off-Topic	States something accurate, but about a different subject than the claim.	Ask: "Does this prove the claim, or does it prove something else?"
Restatement	Repeats the claim using different words without adding new evidence.	Ask: "Is this new information, or is it just saying the same thing again?"
Too Vague	Mentions the topic but provides no specific facts or data.	Ask: "Does this give me a number, name, study, or concrete example?"
Contradicts the Claim	Actually argues against the claim rather than supporting it.	Ask: "Does this detail agree with the claim, or does it disagree?"

✦ KEY TAKEAWAY

Imagine you are a lawyer in court. The claim is your argument: "The defendant was at home at 9 PM." A winning detail is a security camera video showing the defendant at home at 9 PM. A trap is a neighbor saying "he seems like a nice guy." That's nice, but it doesn't prove where he was!

SECTION 8

Connecting to Advanced Reading and Writing

The skill of supporting a claim does not end with the SHSAT. In high school and college, you will write research papers, debate in class, and analyze complex texts. The same principles you learn here will grow with you.

How this SHSAT skill maps to advanced reading and writing.

Skill Level	SHSAT (Now)	High School & Beyond
Identify the Claim	Find the sentence the question points to.	Identify the thesis (main argument) of a full essay or article.
Evaluate Evidence	Choose the best detail from four answer choices.	Judge whether sources in a research paper are reliable, relevant, and sufficient.
Use Evidence	Recognize strong evidence when you see it.	Gather and weave evidence into your own persuasive essays.
Counter-arguments	Not tested yet.	Address opposing viewpoints and explain why your evidence is stronger.

Mastering this skill now gives you a huge head start. In the specialized high schools, teachers expect you to analyze evidence every day. Think of the SHSAT as your training ground—the more you practice picking the best supporting detail now, the easier those future assignments will be.

SECTION 9

Practice Problems

Try these five problems on your own. Read each mini-passage and question, apply the 3-Step Method, then check the answer below.

PROBLEM 1 — CONCEPTUAL

A writer claims: "Regular exercise improves students' ability to focus in school." Which of the following would be the best type of supporting detail? A) A general opinion about exercise being healthy B) A statistic from a university study about focus and exercise C) A sentence explaining that many schools have gym class D) A fact about how many hours kids watch TV

PROBLEM 2 — BASIC

Read the passage: (1) Solar panels are an effective way to power homes. (2) They convert sunlight into electricity without producing harmful emissions. (3) The cost of solar panels has dropped by 89% since 2010, according to the International Energy Agency. (4) Many homeowners enjoy having modern technology on their roofs. Which sentence best supports the claim in sentence 1? A) Sentence 2 B) Sentence 3 C) Sentence 4 D) Both Sentence 2 and Sentence 3 equally

PROBLEM 3 — INTERMEDIATE

Read the passage: (1) Urban beekeeping has grown rapidly in the last decade. (2) Keeping bees in cities helps support the declining bee population. (3) Bees are fascinating creatures that have been around for millions of years. (4) A 2020 report from the USDA found that urban hives had a 30% higher survival rate than rural hives. (5) Some people are afraid of getting stung by bees. Which sentence best supports the claim in sentence 2? A) Sentence 1 B) Sentence 3 C) Sentence 4 D) Sentence 5

PROBLEM 4 — APPLIED

Read the passage: (1) Many educators believe that school start times should be pushed back to 8:30 AM or later. (2) Teenagers' natural sleep cycles make it hard for them to fall asleep before 11 PM. (3) A study in the Journal of Clinical Sleep Medicine found that schools that delayed start times saw a 15% increase in attendance and a measurable rise in test scores. (4) Some parents worry that later start times would interfere with after-school activities. (5) Most teens use their phones before bed, which can delay sleep. Which sentence best supports the claim in sentence 1? A) Sentence 2 B) Sentence 3 C) Sentence 4 D) Sentence 5

PROBLEM 5 — CRITICAL THINKING

Read the passage: (1) Learning a second language benefits students in many ways beyond just communication. (2) Students who study a second language often develop stronger problem-solving skills. (3) Research from the University of Edinburgh tracked 835 people over decades and found that bilingual individuals showed slower cognitive decline as they aged. (4) Foreign language classes are among the most popular electives in American middle schools. (5) Speaking another language can also help students understand and appreciate different cultures. The question asks which sentence best supports the claim in sentence 1. A student picks sentence 5. Explain why sentence 3 is actually the better answer, even though sentence 5 is also relevant.

SUMMARY

Lesson Summary

A claim is a statement that takes a position, and a supporting detail is a fact, example, statistic, or expert opinion that proves the claim is true. On the SHSAT, you will be asked to choose the detail that best supports a claim in a passage. To do this, use the 3-Step Method: first, identify the claim and restate it in your own words; second, test each answer choice by asking if it is relevant and direct; third, pick the most specific detail—numbers, named studies, and concrete examples beat vague statements every time.

Watch out for common traps: answers that are true but off-topic, answers that restate the claim without adding new evidence, and answers that are too vague to prove anything. The strongest supporting details include statistics, expert sources, and specific examples. Mastering this skill will help you on the SHSAT and in every essay, debate, and research project you tackle in high school and beyond.