“Aristotle is so impressive. It explained a math problem to my daughter that ChatGPT couldn't figure out.”
Akshay
parent of Tara, 15
All gradesYour child's own
Your child's own
world‑class ACT tutor
Pioneered by Stanford AI researchers and learning scientists, Aristotle is the world's first voice-based AI ACT tutor.
From functions to grammar and rhetoric, Aristotle has improved thousands of grades over 22% within a week.
Trusted by families at
The curriculum
Over 280 ACT skills, personalized to your child
Aristotle is designed to always know what to teach at exactly the right time.
Sample curriculum
Not startedIn progressMastered* Click a topic to see the skills inside
* Click a topic to see the skills inside
Number and Quantity
Algebra
Functions
Geometry
Statistics and Probability
Integrating Essential Skills
Modeling
ACT Math tutoring curriculum252 skills across 7 units
Number and Quantity
Preparing for Higher Math (PHM) subcategory; ACT reporting range: 10-12%. Topics: Rational and Irrational Numbers, Properties of Exponents, Vectors and Matrices, Complex Numbers, Quantities and Units.
Algebra
Preparing for Higher Math (PHM) subcategory; ACT reporting range: 17-20%. Topics: Linear Expressions, Equations, and Inequalities, Quadratic Expressions, Equations, and Inequalities, Rational and Radical Expressions and Equations, Polynomial Expressions and Equations, Systems of Equations and Inequalities, Representation of Expressions and Equations.
Functions
Preparing for Higher Math (PHM) subcategory; ACT reporting range: 17-20%. Topics: Properties of Functions, Function Composition, Transformation, and Inverse Functions, Sequences and Series, Trigonometric Functions, Exponential and Logarithmic Functions.
Geometry
Preparing for Higher Math (PHM) subcategory; ACT reporting range: 17-20%. Topics: Transformations, Proof, Reasoning, and Constructions, Similarity, Right Triangles, and Trigonometry, Coordinate Geometry, Conic Sections, Properties of Circles, Geometric Measurement and Modeling.
Statistics and Probability
Preparing for Higher Math (PHM) subcategory; ACT reporting range: 12-15%. Topics: Univariate Data Analysis, Bivariate Data Analysis, Introduction to Formal Inferential Statistics, Rules of Probability, Counting, Permutations, and Combinations.
Integrating Essential Skills
ACT reporting category; reporting range: 20%. Topics: Properties of Real Numbers, Computation and Problem Solving with Real Numbers, Ratio, Proportion, and Percent, Writing Algebraic Expressions, Writing and Solving Simple Equations and Inequalities, Measurement Units and Unit Conversion, Properties of Lines, Angles, and Shapes, Perimeter, Circumference, and Area, Surface Area and Volume, The Coordinate Plane, Pythagorean Theorem, Scatterplots, Data Summaries and Displays, Informal Inferential Statistics, Basic Probability.
Modeling
Crosscutting ACT reporting category. Topics: Producing, Interpreting, Understanding, Evaluating, Improving.
ACT English tutoring curriculum32 skills across 3 units
Production of Writing
Questions test writing strategy and organization, including purpose and focus, relevance and support, transitions, sentence placement, and suitable introductions and conclusions. Topics: Topic Development-Purpose and Focus, Organization, Unity, and Cohesion.
Knowledge of Language
Questions test clear, succinct expression in written English, including revising unclear or wordy wording, maintaining style and tone, creating logical clause connections, and choosing the most appropriate word or phrase for the sentence content. Topics: Expressing Ideas Clearly, Style.
Conventions of Standard English
Questions test sentence structure and formation, usage conventions, and punctuation conventions in ACT English passages. Topics: Sentence Structure and Formation, Usage Conventions, Punctuation Conventions.
From our families
What parents are telling us
“My son told me yesterday that we should cancel his human tutor, Aristotle is doing a better job. The human tutor was $250/hour.”
Kim
parent of Andy, 13
“Sam got an A+. So it def worked!!!”
Tina
parent of Sam, 14
Why families switch
Everything an hourly tutor can't be
On demand, 24/7
No scheduling, no weekly slot. Help is there during homework at 9pm and the morning before the test.
A fraction of the cost
Unlimited sessions on a flat plan instead of paying a human tutor by the hour.
Truly personalized
Aristotle tracks every skill your child has mastered and teaches at their exact frontier: never too easy, never too far ahead.
Driven by science
How Aristotle works
Dialogue over lectures
Your child speaks — the tutor listens and responds.
Interactive engagement is the highest level of learning · ICAP Framework
Misconceptions over mistakes
Finds the conceptual gap underneath the wrong answer.
Models the reasoning pattern, not just the error · MISTAKE
Expert-level error handling
Follows the same 3-step process expert tutors use.
Novice tutors skip to correction — experts don't · Bridge
Verified every turn
Every response is checked before it reaches your child.
Turn-by-turn verification improves outcomes · TRAVER
Gets them to think
Asks your child to explain, then guides them until they get there themselves.
Socratic dialogue outperforms GPT-4 by 12% · SocraticLM
Built for the enhanced ACT
Prep that follows the real test
The official categories
ACT Math skills are organized around the test's reporting categories and English around its rule types, so practice matches how the test is actually scored.
Your child's strengths and gaps
Aristotle tracks Math and English separately and spends time where the points actually are, instead of drilling what your child already knows.
Your target score
Working toward a specific composite or an application deadline? Aristotle builds the path backwards from test day.
FAQ
Common questions about online ACT tutoring
ACT Math and ACT English, with 284 individually tracked skills between them. Math is organized around the test's reporting categories: Number and Quantity, Algebra, Functions, Geometry, and Statistics and Probability. English covers Production of Writing, Knowledge of Language, and Conventions of Standard English. Reading and Science tutoring aren't mapped yet; Math and English are where most score movement happens.
Yes. The curriculum follows the enhanced ACT format, which ACT rolled out for national online testing in April 2025, moved to national paper and international testing in September 2025, and brought to state and district testing in spring 2026.
Your child works through practice problems out loud with Aristotle on a shared whiteboard, whether that's a functions problem or a punctuation rule. Aristotle asks questions, listens to their reasoning, and guides them to the answer. Sessions start whenever your child is ready, with no scheduling.
Test-prep tutors charge $60 to $120 an hour for general prep, and established specialists in major cities run $150 to $300 an hour, which puts a few sessions a week at $720 or more a month. Aristotle costs $299 a month for unlimited sessions across every subject, or $49 for a single session.
Chatbots hand your child the answer and forget them when the chat ends. Aristotle teaches the way expert tutors do: it asks your child to explain their thinking, finds the misconception underneath a wrong answer, and guides them with questions until they can solve it themselves. It also tracks every ACT skill across sessions and plans what to practice next, like a tutor who never forgets.
Yes. Parents get a summary after every session, and the parent dashboard shows which skills your child has mastered and where they are stuck. Sessions are reviewed, and every tutor response is checked before it reaches your child.
That is the normal case, and it is what the skill map is for. Aristotle tracks Math and English separately, spends time where points are actually available, and traces weak spots back to the prerequisite skill that is missing instead of drilling the same question type again.
Whenever they start, Aristotle meets them where they are. Many families begin a few months before the first test date, but a shorter runway also works: sessions are unlimited and on demand, so your child can practice every day without scheduling or per-hour costs.
Meet your child's ACT tutor
Set up takes two minutes. The first session starts whenever your child is ready.
Get started