SAT
Work on Math or Reading and Writing, from a short lesson to a full practice test.
- Topic lessons and practice questions
- Full practice tests and saved review
- Vocabulary, Desmos lessons and learning games
LESSONS, PRACTICE AND REVIEW
Make sense of
what you missed.
Read the explanation, work through an example, and try a similar question on your own. Choose your exam below, or take a quick look around first.
Free during beta No credit card For students in grade 8 and up
Students, parents and tutors
CHOOSE YOUR EXAM
What are you preparing for?
SAT has the full study space. ACT is a smaller preview, and SSAT starts with vocabulary.
ACT Preview
Start with English, Math, Reading or optional Science.
- Public subject guides and worked examples
- Available practice with a free account
- Shared skill games
A limited preview, without full ACT practice tests.
SSAT Upper Level
Build word knowledge in short sessions, then work on synonyms and analogies.
- 40 word cards with meanings and examples
- 40 synonym questions and 4 starter analogies
- Free to try · saved in this browser
A small vocabulary beta, not a full SSAT course.
Not sure where to begin? Try one SAT question without signing in →Accounts are available for ages 13 and older.
START WITH WHAT YOU NEED
What would help right now?
Pick the one that sounds familiar.
I can follow an explanation, but I get stuck on my own.
Work through a lesson, then use its practice link to try the idea without the explanation.
Browse SAT lessons →I keep making the same mistake.
Try one SAT question, read the explanation, and follow its lesson link if you want to work on that idea.
Try the SAT demo →I want to see where everything is first.
Take the short walkthrough to find the lessons, practice, review tools and games before you choose.
Show me around →Learning games
Want to practice a different way? Pick a game.
SAT math · Grade 8+
Town Lab
Plan a neighborhood. Work through the math. Watch your ideas take shape.
Foundation, Core or ChallengePlay Town Lab
Geometry
Patchwork Park
Reshape gardens to match their areas. Explore triangles, circles, sectors, and composite shapes.
Easy / Medium / Hard · no timerPlay Patchwork Park
Vocabulary
Word Sprint
Match words to meanings, build a streak, and learn from every miss. Choose Levels 1–4 and your own pace.
Levels 1–4 · choose your pacePlay Word SprintGame progress stays in this browser. Games are separate from scored practice.
Hetvi ShahTutor and founder
WHY I BUILT NEXT PERCENTILE
A student’s questions still matter.
A student’s questions still matter when extra tutoring does not fit the family budget. Their need for a patient explanation does not become any less important.
— Hetvi Shah, founder
I’m a tutor and former assistant director at a learning center, with more than seven years of tutoring and instructional experience.
Read why education matters to me →FOR PARENTS, TOO
You don’t have to remember all the math to help.
Start with one question together. You can read the explanation without having to teach the whole topic yourself.
HELP ME IMPROVE THIS
Tell me where you got stuck.
This is still a beta. Try a short session, then tell me what felt helpful or confusing—even if it was finding the right page.
Sharing your feedback publicly is optional.