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.
Command of Evidence (Textual) · Lesson 3
Causes, and findings that fit either way
Many hypotheses claim a cause: one thing makes another happen. A finding that the two things show up together is some evidence, but it is weak, because something else could explain why they go together. Towns with more bookstores might have higher reading scores because those towns spend more on schools, not because of the bookstores.
A finding gives more direct support to a causal claim when it changes the proposed cause and the effect changes the way the claim predicts, or when it compares cases that differ in the proposed cause but are alike in other ways and finds the predicted difference. When one choice does that and another only shows two things occurring together, choose the first.
Some hypotheses pick one explanation rather than another. Then the right finding has to tell the two explanations apart. A finding that both explanations would predict can't favor either one, however closely it matches the topic. Repeating the observation the researcher is trying to explain is one version of this.
So ask of every choice: Would I expect this just as much if the hypothesis were wrong? If you would, the finding doesn't support the hypothesis. A finding that points to a different cause as the explanation instead, or a careful comparison in which the proposed cause changes and the effect does not, weakens it.
Worked example Medium
Many students listen to music while they read. Psychologist Noor Haddad hypothesizes that background music with lyrics lowers reading comprehension but that music without lyrics does not. She thinks the words in a song compete with the words on the page for the reader's attention.
Which finding, if true, would most directly support Haddad's hypothesis?
- Students who often listen to music while studying have lower grades, on average, than students who rarely do.
- Students scored lower on a reading test with any kind of music playing than when they read in silence, and they scored just as low with instrumental versions of songs as with the original songs.
- Students scored lower on a reading test with songs with lyrics than in silence, but about the same as in silence with instrumental versions of the same songs.Answer
- In a survey, most students said they prefer to study with music playing.
How to solve it
- Pin down the claim. It has two parts: music with lyrics lowers comprehension, and music without lyrics does not. The cause being tested is the lyrics, not music in general.
- The best finding changes only the lyrics and watches comprehension. Playing the same songs with and without words does that.
- The third choice shows lower scores with lyrics and no drop without them, which matches both parts.
Why each choice is right or wrong
- A. Incorrect. This shows only that two things occur together, and it's about music in general, not lyrics. Something else could explain it: students who study with music might also study for less time.
- B. Incorrect. This finding weakens the hypothesis. If music without lyrics also lowered scores, the second part of the claim is wrong.
- C. Correct. The songs were the same except for the words, so the lyrics are the only difference. Scores dropped with lyrics and didn't drop without them, matching both parts of the hypothesis.
- D. Incorrect. What students prefer says nothing about how well they understand what they read.
Worked example Hard
Around 1200 BCE, potters at the inland settlement of Kerevan switched from plain pots to pots painted with spiral designs like those made in the coastal town of Ilmara. Archaeologist Selin Aydın hypothesizes that potters from Ilmara moved to Kerevan and brought the style with them, rather than that Kerevan's own potters copied painted pots they had obtained through trade.
Which finding, if true, would most directly support Aydın's hypothesis?
- Pots painted at Kerevan after 1200 BCE have spiral designs that closely resemble the designs on pots made in Ilmara.
- Several painted pots made from Ilmara's clay, decorated with the same spiral designs, were found in Kerevan houses dating from the decades before 1200 BCE, alongside Kerevan's own plain pots.
- Chemical analysis of teeth from Kerevan burials dating to just after 1200 BCE shows that several of the people buried there grew up in the Ilmara region, including two buried with potters' tools.Answer
- Painted pottery also became common at several other inland settlements around 1200 BCE.
How to solve it
- Pin down the claim. There are two possible explanations: potters from Ilmara moved to Kerevan (Aydın's), or Kerevan's potters copied traded pots (the one she rejects).
- So the right finding must be more likely under the moving explanation than under the copying one.
- Ask of each choice: would I expect this under both explanations? Similar designs: yes, under both. People who grew up in the Ilmara region, two of them buried with potters' tools, at Kerevan right after the switch: that points to potters who moved.
- The third choice is the answer.
Why each choice is right or wrong
- A. Incorrect. This is the tempting choice, and it is the observation the hypothesis is trying to explain. The designs would resemble Ilmara's whether Ilmara potters moved in or Kerevan potters copied traded pots, so it can't favor one explanation.
- B. Incorrect. Painted Ilmara pots in Kerevan before the switch would give Kerevan's potters something to copy. If anything, that fits the trade explanation Aydın rejects, so it doesn't support her hypothesis.
- C. Correct. People who grew up in the Ilmara region, two of them buried with potters' tools, were living in Kerevan right after the switch. That is what Aydın's explanation predicts and the trade explanation doesn't.
- D. Incorrect. A change at many inland settlements doesn't show who made Kerevan's pots or how the style reached Kerevan, so it gives no reason to prefer potters moving over copying.
Trap Together is not the same as because
A choice showing that two things tend to occur together looks like support for a causal claim, but another cause could explain the pattern. When a different choice changes the proposed cause, or compares cases that differ only in that cause, and the effect follows the way the claim predicts, it is the more direct support.
Trap The finding both explanations predict
When a hypothesis picks one explanation over another, a finding that would be true under either explanation can't support the one the researcher prefers. A restatement of the observation in the passage is one version of this trap: it is on topic, but it was never in question.
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.