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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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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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Miss one, learn why.
Every question is tagged by domain and skill, and every answer comes with an explanation.
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Drill that skill.
Practice any single skill at any difficulty, or just the questions you got wrong.
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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
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FAQ
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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.
Unlimited practice with no daily limit, plus every full-length test and Challenge test. Pro is $20 a month or $180 a year. Checkout isn’t open yet, so nothing can be bought today.
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.
Boundaries · Lesson 2
Nonessential elements: pairs of commas, dashes and parentheses
A nonessential element adds information the sentence could do without. The Nile, the longest river in Africa, flows north. Remove the middle phrase and the sentence still works: The Nile flows north.
A nonessential element in the middle of a sentence is set off on both sides by a matching pair: two commas, two dashes or two parentheses. If the element ends the sentence, the period replaces the closing mark.
Never mix the pair. A dash that opens an element can't be closed by a comma, and a comma that opens one can't be closed by a dash.
Essential information is different. In the novelist Chinua Achebe, the name tells you which novelist, so it takes no commas. Test it by deleting the words. If the sentence loses information it needs to identify who or what, the words are essential.
Worked example Easy
The James Webb Space launched in December 2021, observes the universe mainly in infrared light.
Which choice completes the text so that it conforms to the conventions of Standard English?
- Telescope, whichAnswer
- Telescope which
- Telescope—which
- Telescope; which
How to solve it
- Find the closing mark first: there is a comma after December 2021.
- So which launched in December 2021 is a nonessential element, and it needs an opening mark that matches that comma.
- Only Telescope, which opens it with a comma.
Why each choice is right or wrong
- A. Correct. The comma before which pairs with the comma after 2021 to set off the nonessential element.
- B. Incorrect. Without an opening comma, the element is not set off, and the single comma after 2021 separates the subject from its verb observes.
- C. Incorrect. A dash can't open an element that a comma closes. The marks must match.
- D. Incorrect. A semicolon that joins clauses needs an independent clause on each side. The James Webb Space Telescope is not a clause.
Worked example Medium
In a 2019 book, the historian argues that small regional trade fairs did more to spread new farming tools than royal decrees did.
Which choice completes the text so that it conforms to the conventions of Standard English?
- Renata Oyelaran,
- Renata OyelaranAnswer
- , Renata Oyelaran,
- —Renata Oyelaran
How to solve it
- Ask whether the name can be deleted. The historian argues that... doesn't tell you which historian, so the name is essential.
- Essential identifying words take no commas.
- The subject is the historian Renata Oyelaran and the verb is argues. Nothing should separate them.
Why each choice is right or wrong
- A. Incorrect. A single comma separates the subject the historian Renata Oyelaran from its verb argues.
- B. Correct. The name identifies which historian, so it is essential and takes no punctuation.
- C. Incorrect. The pair of commas marks the name as removable, but the sentence needs it to identify which historian is meant.
- D. Incorrect. A single dash sets off nothing and separates the historian from the rest of its own subject.
Your progress
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Practice
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Each test mirrors the digital SAT: 98 questions across four modules, 2 hr 14 min on official timing.
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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.
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