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.
Percentages · Lesson 5
Percentage points and percents in tables
When the quantity that changes is itself a percent, there are two ways to describe the change. A percentage point is the unit for the difference between two percents: subtract them. A percent change compares the change with the starting percent: divide, as in Lesson 2.
If a rate goes from 20% to 30%, it rose by 10 percentage points (). As a percent change, it rose 50%, because the increase of 10 is half of the starting 20. Both statements are true. They answer different questions, so read which one the question asks for.
In a two-way table, each number belongs to a row and a column, and a percent can use the row total, the column total or the grand total as its base. The group named after of tells you which. In the table below, what percent of grade 10 students pack lunch? uses the grade 10 total: .
What percent of the students who pack lunch are in grade 10? uses the pack-lunch total: . What percent of all the students are grade 10 students who pack lunch? uses the grand total: . Same 48, three different percents.
| Grade | Packs lunch | Buys lunch | Total |
|---|---|---|---|
| Grade 10 | 48 | 72 | 120 |
| Grade 11 | 42 | 98 | 140 |
| Total | 90 | 170 | 260 |
Worked example Easy
In 2021, 15% of the employees at a company worked from home. In 2023, 18% of the employees at the company worked from home.
Which statement about the change in the share of employees who worked from home from 2021 to 2023 is true?
- The share rose by 3 percent.
- The share rose by 3 percentage points.Answer
- The share rose by 20 percentage points.
- The share rose by about 17 percent.
How to solve it
- The difference between the two percents is , so the share rose 3 percentage points.
- As a percent change, the increase of 3 is compared with the starting 15: , a 20% increase.
- So 3 percentage points and 20 percent are both correct descriptions. Only one of them is a choice.
Why each choice is right or wrong
- A. Incorrect. 3 is the change in percentage points. As a percent change, 3 is 20% of the starting 15, so the share rose 20 percent, not 3 percent.
- B. Correct. The share went from 15% to 18%, a difference of percentage points.
- C. Incorrect. 20 is the percent change, . The difference in percentage points is only 3.
- D. Incorrect. This divides the change by the 2023 share: , or about 17%. The base for a percent change is the starting share, 15%, which gives 20 percent.
Worked example Medium
Internet Service in 250 Households
| Region | Fiber | Cable | Total |
|---|---|---|---|
| North | 54 | 66 | 120 |
| South | 39 | 91 | 130 |
| Total | 93 | 157 | 250 |
Which of the following is closest to the percent of households with fiber service that are in the North region?
- Answer
How to solve it
- The group after of is households with fiber service, so the base is the fiber total, 93.
- Of those 93 households, 54 are in the North.
- , about 58.1%.
Why each choice is right or wrong
- A. Incorrect. This divides by all 250 households: , or 21.6%. That is the percent of all households that are North households with fiber.
- B. Incorrect. , or 37.2%, is the percent of all households that have fiber. The question asks what share of the fiber households are in the North.
- C. Incorrect. This divides by the North total: , or 45%. That is the percent of North households that have fiber, the reverse question.
- D. Correct. The base is the 93 fiber households, and 54 of them are in the North: .
Trap Percent or percentage points?
When a percent moves from 20% to 30%, a choice that says it rose 10% mixes the two units: it rose 10 percentage points, or 50%. Subtract for points; divide by the starting percent for a percent change.
Trap Dividing by the wrong total
A two-way table gives every wrong base a number to land on: the row total, the column total and the grand total each produce a different percent from the same cell. Find the group after of and divide by that group's total.
Desmos When Desmos isn’t faster
Desmos doesn't read the table for you or decide which total is the base, and that choice is the whole question.
Once you've picked the two numbers, Desmos is a fine calculator: type 48/90 and it shows about 0.5333, so the percent is about 53.3%.
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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- ✓ 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
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Full course and plan
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