Free
$0no card needed
- The Daily, every day
- 36 practice questions a day, each with an explanation: 12 easy, 12 medium, 12 hard
- Full-length Test A and Challenge Test 1
- All 1,023 vocabulary words: browse, flashcards and quiz
Digital SAT practice
Reach your peak.
A quick run every day, an explanation for every question, and full-length tests on official timing.
Free, no card. You also get 36 practice questions a day: 12 easy, 12 medium and 12 hard.
The DailySTEP 1
- Three hearts. A miss costs one.
- Streaks pay. ×2 from three in a row, ×3 from six.
- Your longest streak. Beat it tomorrow.
Full-length tests
The real test, rehearsed.
98 questions across four modules, in the digital SAT’s order and on its timing, with a highlighter, a question map and a timer you can see.
How it works
One run a day. One skill at a time.
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1
Play the Daily.
A quick run with three hearts. String right answers together and the questions get harder and the points multiply.
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2
Miss one, learn why.
Every question is tagged by domain and skill, and every answer comes with an explanation.
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3
Drill that skill.
Practice any single skill at any difficulty, or just the questions you got wrong.
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4
Beat your best.
Come back tomorrow and climb. Progress shows your accuracy and your strongest skills.
Built around the real SAT blueprint.
Every question is tagged by section, domain, skill and difficulty, so you can practice exactly what you need. Full tests run like test day: two Reading & Writing modules, a break, then two Math modules.
Free daily practice
12 easy, 12 medium and 12 hard questions free every day, each with a full explanation. Filter by section, domain, skill and difficulty. Resets at midnight.
Real SAT timing
Take any test on official timing, extended 1.5× time, or untimed to focus purely on accuracy.
Adaptive full-length tests
Four modules in official order. The second module of each section adapts to how you did on the first.
Vocabulary
1,023 essential SAT words. Browse the list, flip flashcards, or quiz yourself.
Your progress
Accuracy across daily practice and full tests, your strongest skills, and the ones that need the most help.
Games
PEAK Survivor, Hole and Peak Defense: three games powered by SAT practice questions.
Explanations
Every answer, explained.
Not just the right letter: how to get there, and why the tempting answer is wrong.
MathProblem-Solving and Data AnalysisHard
A store raises the price of a jacket by 20%. Later, it lowers the new price by 20%. The final price is what percent of the original price?
A80%
B96%Correct
C100%The trap
D104%
Check with $100: $100→then$120→then$96
Turn each change into a multiplier.
Up 20% means × 1.20. Down 20% means × 0.80.
Apply them in order.
1.20 × 0.80 = 0.96
Read the answer.
The final price is 96% of the original. That’s B.
Why not 100%?
The 20% cut is taken from the higher price, so it removes more than the 20% increase added.
Test day
What test day looks like.
Every Peakscor full test follows this order. In the standard tests, the second module of each section adapts to how you did on the first.
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Reading & Writing · Module 1
27 questions32 min
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Reading & Writing · Module 2
27 questions32 min
Adapts to how you did on Module 1. -
Break
10 min
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Math · Module 1
22 questions35 min
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Math · Module 2
22 questions35 min
Adapts to how you did on Module 1.
98 questions · 2 hr 14 min of testing, plus the break
Peakscor by the numbers
- 36free practice questions every day
- 98questions in every full-length test
- 1,023SAT vocabulary words
- 1.5×extended-time option on every test
Plans
Free every day. Pro when you’re serious.
The free plan is the real thing, not a trial. Pro removes the limits. Peak adds the full course and a plan to test day.
Pro
$20a month, or $200 a year
- Everything in Free
- Unlimited practice, no daily limit
- Every full-length test and Challenge test
Peak
$29a month, or $280 a year
- Everything in Pro
- The full Learn course: every lesson and mastery quiz
- Peak Plan, day by day to test day
Prices in US dollars. Cancel anytime.
FAQ
Questions, answered.
The Daily, plus 36 practice questions every day: 12 easy, 12 medium and 12 hard, each with a full explanation. Full-length Test A, Challenge Test 1 and all 1,023 vocabulary words are free too. No card needed.
Pro is $20 a month or $200 a year: unlimited practice with no daily limit, plus every full-length test and Challenge test. Peak is $29 a month or $280 a year: everything in Pro, plus the full Learn course and Peak Plan. Cancel anytime from your account.
98 questions across four modules, in the digital SAT’s order: Reading & Writing Module 1 and Module 2 (27 questions each), a 10-minute break, then Math Module 1 and Module 2 (22 questions each). On official timing that’s 2 hr 14 min of testing. You get estimated section scores and a total at the end.
Yes. In the standard full-length tests, Module 2 of each section is the harder version if you get 60% or more of Module 1 right, and the easier version if you don’t. Challenge tests use the hardest material throughout.
Official timing, extended 1.5× time, or untimed, on every test, including the free ones. Extended time allows 48 minutes for each Reading & Writing module and about 52 for each Math module. Untimed removes the clock so you can focus on accuracy.
A quick run with three hearts. Each right answer builds your streak: the questions get harder as it grows, and your points multiply (×2 from three in a row, ×3 from six). A miss costs a heart and drops you back to easy. Best is your longest streak.
Every day at midnight. You get a fresh 12 easy, 12 medium and 12 hard.
No. Peakscor is an independent SAT practice tool, not affiliated with the College Board. Scores shown are estimates.
Your next point starts today.
Free, no card.
Text Structure and Purpose · Lesson 3
Function: the job of one sentence
A function question underlines a sentence, or part of one, and asks what it does in the text as a whole. The answer names a job: it introduces the topic, gives an example, presents evidence, raises an objection, concedes a point, limits a claim, states a conclusion.
You can't answer by reading only the underlined sentence. Read the sentence before it and the sentence after it, and ask: What would the passage lose if this sentence were deleted? That loss is its function.
Many wrong choices summarize what the sentence says instead of what it does, or name the job of a different sentence. A choice can repeat the sentence's content accurately and still be wrong, because the question asks about its role.
The connecting words around the sentence are clues. A sentence that starts with For instance usually illustrates. One that starts with However or But usually turns against what came before. One that starts with As a result usually gives an effect.
Worked example Easy
Some animals can tell individual humans apart. In one study, mockingbirds that had watched a researcher approach their nests just a few times began flying at her as soon as she appeared, while ignoring other people who walked past. Similar abilities have been reported in sheep, which can learn to recognize photographs of familiar people and choose them over photographs of strangers.
Which choice best describes the function of the underlined sentence in the text as a whole?
- It provides an example that supports the claim made in the first sentence.Answer
- It explains why mockingbirds defend their nests against people.
- It describes an exception to the general claim made in the first sentence of the text.
- It presents a result that the sentence about sheep later calls into question.
How to solve it
- Read the sentence before: a general claim, Some animals can tell individual humans apart.
- The underlined sentence gives one case: mockingbirds that pick out one researcher and ignore everyone else. The sentence after gives a second case, sheep.
- Delete the underlined sentence and the claim loses its first example. So its job is to illustrate and support the claim.
Why each choice is right or wrong
- A. Correct. Flying at one researcher while ignoring other people who walked past shows the birds telling individual humans apart, which is exactly the claim in the first sentence.
- B. Incorrect. The sentence reports what the birds did, not why. And the passage uses it as evidence about recognizing people, not about defending nests.
- C. Incorrect. The mockingbirds fit the claim; they don't break it. They are animals that tell one person from others, which makes them a case of the claim, not an exception to it.
- D. Incorrect. The sentence about sheep begins Similar abilities, so it adds a second example rather than casting doubt on the first.
Worked example Medium
Many historians credit the railroad with the rapid growth of American cities in the late 1800s. Economic historian Lucas Brandt thinks that account leaves something out. Railroads certainly made it cheaper to ship food into cities, and Brandt does not dispute their importance. But in his study of forty Midwestern cities, more than half had already doubled in population before a rail line reached them, largely thanks to river and canal traffic.
Which choice best describes the function of the underlined sentence in the text as a whole?
- It states the main conclusion that Brandt draws from his study of forty Midwestern cities.
- It presents evidence that Brandt uses to reject the traditional account entirely.
- It concedes part of the traditional account before the text presents Brandt's objection to it.Answer
- It explains how the railroads lowered the cost of shipping food into fast-growing American cities.
How to solve it
- Map the passage: a traditional account, Brandt's view that it leaves something out, the underlined sentence, then But and his evidence.
- The underlined sentence agrees with part of the traditional account: railroads mattered, and Brandt does not dispute their importance. The But that follows turns to his objection.
- Granting a point before turning against it is a concession. That is the sentence's job.
Why each choice is right or wrong
- A. Incorrect. Brandt's view is that the traditional account leaves something out, and his evidence comes after But. The underlined sentence agrees with the account rather than stating his finding.
- B. Incorrect. Brandt does not dispute their importance, so he isn't rejecting the account entirely, and this sentence supports the account rather than arguing against it.
- C. Correct. The sentence grants that railroads mattered (Brandt does not dispute their importance), and the next sentence, beginning But, presents what he thinks the account leaves out.
- D. Incorrect. This describes the sentence's content, not its job, and the sentence doesn't explain how costs fell. It only states that railroads made it cheaper to ship food into cities.
Trap What it says instead of what it does
A choice can restate the underlined sentence accurately and still be wrong. If a sentence about how a vaccine is stored is there to explain why the vaccine never reached remote villages, It describes how a vaccine is stored is true but misses its job. Look for the choice that names a job and connects the sentence to the rest of the text: introduces a problem, gives an example, concedes a point.
Trap The neighbor's job
Wrong choices often describe the job of the sentence just before or just after the underlined one: the claim it supports, the question it answers or the conclusion it leads to. Put your finger on the underlined words themselves and ask whether they do what the choice says.
Practice
Choose a section, then practice a whole domain or drill a single skill.
Full-length tests
Each test mirrors the digital SAT: 98 questions across four modules, 2 hr 14 min on official timing.
A little harder than the real SAT. These tests can run slightly tougher than test day, which makes them good practice: if you can handle these, the real one should feel easier. No question appears in more than one test, Challenge Tests included.
Challenge Tests Hardest of the hardest
Same 98-question format, but every question is drawn from the toughest SAT material: Challenging-tier math throughout and the hardest reading.
Vocab
Study the classic SAT vocabulary list. Browse, flip flashcards, or quiz yourself.
Free every day. Pro when you're serious.
Practice free every day. Pro removes the limits. Peak adds the full course and a plan to test day.
FREE
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- ✓ Test A and Challenge Test 1
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PRO
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Full course and plan
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