Percentile is hyper-personalized test prep powered by a 24/7 frontier AI tutor, spaced-repetition learning, and 9,000+ expertly crafted questions. Built by the students who actually scored in the top 1%.
No credit card · Free forever tier · Full diagnostic takes ~2 hours
“Percentile diagnosed exactly the gaps no tutor ever caught. The AI would reword a concept seven different ways until it clicked. I walked into test day knowing I had earned a 99th percentile score.”
“Every test prep tool I'd tried before building Percentile treated me like a generic student. They drilled what I already knew and skipped the gaps I was actually struggling with. So I built the platform I wish I'd had: one that learns you faster than you learn the material, and never wastes a minute of your time.”
A standardized test score is one of the last numbers in college admissions that is entirely earned, entirely portable, and entirely yours. It can add six figures to a college offer, and change which schools even return the call.
Admissions is holistic. It is also numerical. At every school below, the middle 50% of admitted students scored in the top 2% of all SAT takers nationally. Your essays, activities, and story all matter. Your score is the filter that decides whose story gets read.
Middle 50% SAT ranges sourced from recent Common Data Set submissions and each institution's published admissions data. Admit rates reflect the most recently published cycle. Figures shift year over year and are approximate.
Here is the part most families do not realize until acceptance letters arrive: at the country's most selective private universities, financial aid is so generous that an admit is often free or near-free. A score that gets you in is also the score that hands you the bill paid in full.
for families under $100K at Harvard, Yale, MIT, Stanford, and Princeton
at Harvard, Yale, and MIT. Stanford caps at $150K, Princeton at $180K.
at these schools, with the average package covering the vast majority of cost
Sources: each university's undergraduate financial aid pages, 2026 academic year. Yale's expanded threshold takes effect for the entering class of Fall 2026. All policies are need-based; significant household assets (savings, investments, home equity) can reduce eligibility even at lower incomes.
A 99th-percentile SAT at a flagship public can translate to a full four-year scholarship package. No income limits. No essays required for automatic tiers.
Source: U. of Alabama Presidential Elite / Ole Miss Academic Excellence
Even at test-optional schools, strong scores are the single biggest driver of merit-based aid. Test-optional is not test-blind.
Source: IHEP / College Board 2024
At selective universities, moving from a mid-range score to the top decile of applicants can multiply your chance of admission by 2× to 4×.
Source: Common Data Sets, top-50 research universities
Move the slider to see what each score tier unlocks at hundreds of U.S. universities.
Illustrative ranges compiled from publicly posted automatic-merit scholarships at large public universities (Alabama, Arizona State, Kentucky, Mississippi State, Ole Miss, Tulsa, San Diego State) combined with College Board national percentile data. Actual awards vary by GPA, institution, and year.
A single year of Percentile costs less than a single hour of a premium tutor, and can unlock tens of thousands of dollars in automatic merit scholarships. Most families who invest in prep see it returned more than a hundred times over by graduation.
This isn't about memorizing tricks. It's about actually getting good at the material, so you walk into test day calm, prepared, and confident that the score you earn is the score you deserve.
A full-length official-style test pinpoints your exact strengths, weaknesses, and predicted score, before you spend a dollar.
The AI builds a day-by-day plan tailored to your target score, test date, and learning speed. It adjusts every time you study.
Adaptive drills, deep lessons, and a 24/7 tutor that explains concepts your way. Spaced repetition locks every concept in.
Live predicted score climbs in real time. Know you're ready. Then prove it on the real test.
The six things that actually move a score. No fluff, no filler.
A diagnostic test surfaces the specific concepts you haven't mastered. Then the plan rebuilds itself daily around your real weaknesses, not a generic curriculum.
Ask anything, at any hour. A frontier model explains the problem you actually got wrong, in the way you actually learn. No scheduling, no judgment, no hourly rate.
Review intervals calibrate to your memory curve for each concept. You never waste time on what you know, and you never forget what you've learned.
Every question is written by top scorers and reviewed by subject experts, not pulled from a bulk dataset. Explanations teach the concept, not just the answer.
Beyond drills: complete lessons for every tested concept, cross-linked to the questions that use them. Learn the material cold, not just the test-taking tricks.
A rolling projection of your official-test score updates with every answered question. Walk into test day knowing exactly how you'll perform.
Every drill, every lesson, every explanation is tied to a live predicted-score model. You always know exactly where you stand.
PercentileTutor and generic-app pricing ranges reflect typical US market rates in 2026.
Unlimited AI tutoring, 9,000+ questions, and a personalized plan, for a fraction of what families pay tutors. Every plan includes every feature.
Pricing shown is for SAT prep. Each exam is purchased separately.
Short windows. Maximum flexibility.
The standard SAT prep window.
Longer runway. Bigger jumps.
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Start with the free diagnostic. Two hours tonight could be worth a hundred thousand dollars, one acceptance letter, and every door that opens behind it.
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