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.
One-variable data · Lesson 1
Mean, median and mode
A data set is a list of numbers that measure the same thing, such as the heights of the players on a team. The SAT asks about its center, the typical value, in three ways.
The mean (average) is the sum of the values divided by how many values there are. The median is the middle value once the values are in order from least to greatest. With an even number of values there are two middle values, and the median is their mean. The mode is the value that appears most often. A data set can have more than one mode, or none if no value repeats.
Put the values in order before you look for the middle. With values, the median sits at position in the ordered list: the 4th of 7 values, or halfway between the 4th and 5th of 8 values.
Many mean questions are really about the sum: sum = mean × number of values. If 5 numbers have a mean of 6, they add up to 30. To find a missing value, find the sum the mean requires and subtract the values you know.
Worked example Easy
The list shows the numbers of minutes 7 students spent on the same homework assignment.
16, 9, 21, 12, 9, 25, 14
What is the median number of minutes?
- Answer
How to solve it
- Put the values in order from least to greatest: 9, 9, 12, 14, 16, 21, 25.
- There are 7 values, so the median is the value at position .
- The 4th value in the ordered list is 14, with three values below it and three above. The median is 14 minutes.
Why each choice is right or wrong
- A. Incorrect. 9 is the mode, the only value that appears twice. The median is the middle value of the ordered list, which is 14.
- B. Incorrect. 12 is the 4th value in the list as it is printed, before ordering. Order the values first: the 4th value of 9, 9, 12, 14, 16, 21, 25 is 14.
- C. Correct. In order, the values are 9, 9, 12, 14, 16, 21, 25. The 4th of the 7 values is 14, with three values on each side.
- D. Incorrect. 17 is halfway between the least and greatest values, . That uses only two of the values. The median is the middle value of the ordered list, 14.
Worked example Medium
The mean of 6 numbers is 15. Five of the numbers are 11, 18, 9, 20 and 13. What is the sixth number?
- Answer
How to solve it
- A mean of 15 for 6 numbers means the 6 numbers add up to .
- The five known numbers add up to .
- The sixth number is . Check: .
Why each choice is right or wrong
- A. Incorrect. This multiplies the mean by 5, the number of known values, instead of 6: . All 6 numbers share the mean, so their sum is .
- B. Incorrect. 14.2 is the mean of the five known numbers, . The sixth number has to bring the total up to 90, not match the mean of the others.
- C. Incorrect. This assumes the missing number equals the mean. That works only if the other five already average 15, but they average 14.2, so the sixth number must be greater than 15.
- D. Correct. The six numbers must add up to . The five known numbers add up to 71, so the sixth is .
Trap Looking for the middle before ordering
The middle of a list as it is printed is not the median. The SAT often lists data out of order, and the printed middle value can be one of the choices. Order the values first, every time.
Trap Working with means when you need sums
When a question gives a mean and asks about a missing, added or removed value, switch to sums: multiply the mean by the number of values, then add or subtract. Treating the missing value as equal to the mean, or dividing by the wrong count, leads to a wrong choice.
Desmos When Desmos is faster
Desmos computes a mean or median for you. Type mean([16, 9, 21, 12, 9, 25, 14]) on an empty line and Desmos shows the result on that line, here a long decimal, about 15.14. Type median([16, 9, 21, 12, 9, 25, 14]) the same way to get 14. Desmos orders the values itself.
To avoid retyping, name the list: L = [16, 9, 21, 12, 9, 25, 14] on one line, then mean(L) and median(L) on the next lines.
For a missing value, Desmos doesn't save time: the sum method is two quick steps by hand. For the mode, look for the value that repeats most; that is quicker by eye.
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.