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.
All grades
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
Built for the enhanced ACT
Prep that follows the real test
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.
Features
All the tools of a great tutor.
Talk things through, work side by side, and come back next time to a tutor who remembers where you left off.
Learn out loud
Ask questions out loud, hear explanations in Aristotle’s voice, and interrupt whenever you need to.
An interactive whiteboard
Aristotle draws steps, diagrams, and images to help you learn visually.
Practice built for you
Get practice problems tailored to the exact topics you’re struggling with.
65 subjects and counting
From middle-school math to AP exams to SAT/ACT prep. We also build custom plans matched to state standards and specific courses.
Review with ease
Revisit session summaries, session whiteboards, and uploads in one place.
Upload your own materials
Aristotle can read and navigate any PDFs and images with the learner. That includes textbooks with hundreds of pages!
Personalized tracking
We break all subjects down into granular skills, then track mistakes and mastery on each one. Parents can see the whole picture at a glance.
A tutor that knows you
Aristotle remembers every session: what you’ve covered, where you got stuck, how you like things explained. It picks up right where you left off.
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.
Here’s what families say about Aristotle
My son told me yesterday that we should cancel his human tutor, because Aristotle is doing a better job. The human tutor was $250/hour.
Common questions about online ACT tutoring
A few things you might wonder before getting started.
What does Aristotle cover for the ACT?
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.
Is Aristotle updated for the enhanced ACT?
What does an ACT tutoring session look like?
How much does Aristotle cost compared to a private ACT tutor?
How is Aristotle different from ChatGPT for ACT prep?
Can parents see how prep is going?
What if my child is strong in one section and weak in another?
When should my child start ACT prep?
From the notebook
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This could be you
A little help. A lot to learn.
For homework, supporting your child, or anything you’ve always wanted to know more about, Aristotle makes it easy for anyone to learn out loud.