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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.
Form, Structure, and Sense · Lesson 4
Possessives and plurals
A plural means more than one and takes no apostrophe: the rangers, several cities. A possessive shows ownership or another close relationship. It usually comes before the noun it describes, either directly or with describing words in between: the ranger's notebook, the singer's earliest recordings.
For one owner, add 's: the singer's recordings. For a plural owner that ends in s, add only an apostrophe after the s: the rangers' records. For a plural that doesn't end in s, add 's: the children's library.
To decide, ask two questions. Does the word own a noun that comes after it? If it owns nothing, it's a plain plural with no apostrophe. If it does, how many owners are there? The rest of the passage tells you: the park's rangers, her early style.
The possessive pronouns its, their, whose and your never take an apostrophe. The apostrophe forms are contractions: it's means it is or it has, they're means they are, and who's means who is or who has. There points to a place or starts a phrase such as there is. Expand the contraction to test it: it is surface makes no sense, so the answer is its surface.
| Word | Meaning | Example |
|---|---|---|
| its | belonging to it | the hive and its bees |
| it's | it is, it has | it's raining |
| their | belonging to them | the plants and their leaves |
| they're | they are | they're blooming |
| there | a place, or there is | there are three |
Worked example Easy
A honeybee that finds a rich patch of flowers returns to the hive and performs a waggle dance, in which movements tell other workers the direction and distance of the food.
Which choice completes the text so that it conforms to the conventions of Standard English?
- it's
- their
- itsAnswer
- its'
How to solve it
- The movements belong to the bee, so the blank needs a possessive.
- The owner, A honeybee, is singular, so the pronoun must be singular.
- The singular possessive pronoun is its, with no apostrophe.
Why each choice is right or wrong
- A. Incorrect. It's means it is, and in which it is movements makes no sense.
- B. Incorrect. Their is plural, but the owner of the movements is A honeybee, which is singular.
- C. Correct. The movements belong to the singular honeybee, and its is the singular possessive pronoun.
- D. Incorrect. Its' is not a word. The possessive of it is its, with no apostrophe.
Worked example Medium
For three summers, the park's rangers recorded the location of every loggerhead turtle nest on the beach. The show that most nests were laid within twenty meters of the dunes.
Which choice completes the text so that it conforms to the conventions of Standard English?
- rangers' recordsAnswer
- ranger's records
- rangers records
- rangers' record's
How to solve it
- The records belong to the rangers, so the first word must be possessive.
- The first sentence says the park's rangers, more than one, so the owner is plural: rangers'.
- Records doesn't own anything, since it is followed by the verb show. It is a plain plural with no apostrophe.
Why each choice is right or wrong
- A. Correct. Rangers' is the plural possessive for the many rangers who kept the records, and records is a plain plural.
- B. Incorrect. Ranger's is a singular possessive, but the passage says the records were kept by the park's rangers, more than one.
- C. Incorrect. Rangers has no apostrophe, so it doesn't show that the records belong to the rangers.
- D. Incorrect. Rangers' is right, but record's adds an apostrophe to a word that owns nothing. It is followed by the verb show.
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Study the classic SAT vocabulary list. Browse, flip flashcards, or quiz yourself.
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