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.
-
1
Play the Daily.
A quick run with three hearts. String right answers together and the questions get harder and the points multiply.
-
2
Miss one, learn why.
Every question is tagged by domain and skill, and every answer comes with an explanation.
-
3
Drill that skill.
Practice any single skill at any difficulty, or just the questions you got wrong.
-
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.
-
Reading & Writing · Module 1
27 questions32 min
-
Reading & Writing · Module 2
27 questions32 min
Adapts to how you did on Module 1. -
Break
10 min
-
Math · Module 1
22 questions35 min
-
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 1
Main purpose: what the whole text is for
A purpose question asks why the writer wrote the passage: what the whole text is trying to do for the reader. The answer is a job, stated with a verb: to explain, to argue, to describe, to challenge, to illustrate.
Read the whole passage, then finish this sentence before you look at the choices: The writer wrote this mostly to... Use a verb, then say what it acts on. To explain why glaciers move is a purpose. Glacier movement is only a topic.
Test each choice in two ways. Scope: does it cover the whole passage, or only one sentence of it? Strength: is the verb as strong as the passage, no stronger and no weaker? A passage that raises a doubt about an idea questions or complicates it. It disproves the idea only if it shows the idea is false.
The table below lists verbs you will meet in the choices and what each one needs the passage to do. You will use the same verbs for structure and function questions.
| Verb | The passage must... |
|---|---|
| introduce | bring up an idea, person or problem for the first time |
| describe | tell what something is like or what happened |
| explain | tell how or why something happens |
| illustrate | give a specific example of a broader point |
| support | give evidence that makes a claim more likely to be true |
| qualify | limit a claim: say when, where or how far it holds |
| challenge, question | give a reason to doubt a view |
| contradict | present findings that go against a view (on its own, this doesn't mean the view is settled as false) |
| refute, disprove | show that a view is false |
| contrast | set two things side by side to show how they differ |
Worked example Easy
Wood frogs in Alaska spend the winter frozen solid: their hearts stop, and ice forms between their cells. Biologists wondered how the frogs could survive this. The answer lies in sugar. As temperatures drop, a wood frog's liver floods its cells with glucose, which keeps ice from forming inside the cells and tearing them apart. When spring arrives, the frog thaws, and its heart starts beating again within hours.
Which choice best states the main purpose of the text?
- To argue that wood frogs are better suited to cold climates than any other frog
- To describe what happens to a wood frog's heart when the frog thaws in spring
- To explain how wood frogs survive being frozen during the winterAnswer
- To compare the ways different animals in Alaska survive the winter
How to solve it
- Label the passage. Sentence 1: a surprising fact, the frogs freeze solid. Sentence 2: a question, how do they survive? Sentences 3 to 5: the answer, glucose, and what happens in spring.
- Finish the sentence: The writer wrote this mostly to explain how wood frogs survive freezing.
- Check scope and strength. Only the third choice covers both the question and its answer without adding anything.
Why each choice is right or wrong
- A. Incorrect. The passage never compares wood frogs with other frogs, and it doesn't argue for anything. It explains a process. The phrase than any other frog adds a comparison the text doesn't make.
- B. Incorrect. The thawing heart appears only in the last sentence. This choice fits one detail, not the whole passage, which is mostly about how the frogs survive the freeze.
- C. Correct. The passage raises a question, how the frogs could survive this, and spends its remaining sentences answering it: glucose keeps ice from forming inside the cells.
- D. Incorrect. Wood frogs are the only animal the passage discusses. A comparison of different animals in Alaska is a step the text never takes.
Worked example Medium
Economists have long assumed that people who win large lottery prizes spend their winnings quickly and end up no better off than before. Economist Teodora Vass followed 4,000 prize winners in Sweden for ten years. A decade after their wins, most still had more savings than people of similar age and income who had not won. Vass notes, however, that winners under age thirty were far more likely than older winners to have spent the entire prize.
Which choice best states the main purpose of the text?
- To explain why lottery winners under age thirty tend to spend their entire prize so quickly
- To present findings that mostly contradict a long-held assumption about lottery winnersAnswer
- To show that a long-held assumption about lottery winners is false for winners of every age
- To describe how Vass chose the 4,000 Swedish winners she followed for ten years
How to solve it
- Label the moves: an assumption (winners end up no better off than before), a study, a finding that cuts against the assumption, and an exception (young winners).
- Purpose in your own words: to present a study that mostly goes against the assumption, with one exception.
- Now check strength. The exception matters. The study doesn't show the assumption is wrong for everyone, so the choice that says every age goes too far, and mostly contradict matches.
Why each choice is right or wrong
- A. Incorrect. The passage reports that young winners were far more likely to spend the whole prize, but it never says why. This choice also fits only the last sentence.
- B. Correct. Most winners still had more savings a decade later, which goes against the assumption that winners end up no better off than before. Mostly leaves room for the exception in the last sentence.
- C. Incorrect. This is too strong. The last sentence says winners under thirty were far more likely to have spent everything, so the study does not show the assumption is false for every age.
- D. Incorrect. The passage says Vass followed 4,000 prize winners in Sweden, but it never says how she chose them. The choice describes something the text doesn't contain.
Trap A purpose that fits one sentence
A tempting wrong answer often describes exactly what one sentence does: the opening background, a single example, the caution at the end. It is accurate, so it feels safe. Before you choose it, ask whether it accounts for the rest of the passage. If most of the sentences have nothing to do with it, it is not the main purpose.
Trap The verb that goes too far
Choices with prove, refute, disprove or show that a view is false need a passage that settles the matter. If the passage reports a study with a clear exception, such as a group or setting where the view still holds, a small effect or a limit the researcher admits, the right verb is milder: questions, complicates, qualifies, suggests, or a hedged one such as mostly contradicts. The reverse mistake happens too: describes is too weak for a passage that clearly argues for a position.
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
$0forever
- ✓ 12 easy + 12 medium + 12 hard daily
- ✓ Practice by any SAT domain
- ✓ Explanations on every question
- ✓ Test A and Challenge Test 1
- ✓ The first lesson of every Learn module
PRO
$200/ year
About $16.67 a month, save $40
- ✓ Everything in Free
- ✓ Unlimited daily practice
- ✓ Every full-length and Challenge test
- ✓ Every timing mode
Full course and plan
PEAK
$280/ year
About $23.33 a month, save $68
- ✓ Everything in Pro
- ✓ Every Learn lesson, summary and mastery quiz
- ✓ Peak Plan: a day-by-day plan to test day
- ✓ Cancel anytime
Prices in USD. Switch or cancel your plan at any time.