Online Digital SAT course
A structured online SAT prep course for both sections of the test. Short lessons teach one skill at a time, SAT-style questions check that it stuck, and a personal study plan tells you exactly what to do next until test day.
08
Course modules
Covering both Digital SAT sections
75
Guided lessons
Each one teaches a single skill
5,000+
Practice questions
Attached directly to the lessons
38h
Hours of study
Lessons plus question practice
6,900+
Flashcards
For vocabulary, grammar and formulas
01 /What the course covers
The Digital SAT has two sections, Reading and Writing and Math, and each is split into two adaptive modules. College Board publishes which content domains each section tests and roughly how many questions come from each one.
SAT Sphere's curriculum follows that blueprint closely, so the time you invest goes to the topics that carry the most points, not to material that never appears on the test.
44 questions · 70 min · 2 modules
The Math section mixes multiple-choice and student-produced response questions across algebra, advanced math, data analysis and geometry. The Desmos graphing calculator is available for every question, and roughly 30% of questions are set in a real-world context.
Approximate share of questions by content domain
54 questions · 64 min · 2 modules
Reading and Writing uses short passages of 25–150 words, each followed by a single question. You are tested on reading critically, using evidence, vocabulary in context, revising text for clarity and applying Standard English conventions such as punctuation and agreement.
Approximate share of questions by content domain
02 /Full curriculum
The course is divided into 8 modules, each focused on one area of the test. Open any module to see its lessons, the skills it builds and how long it takes, or simply follow the recommended order from top to bottom.
4 modules · 40 lessons · 2844 questions
On the test: 44 questions in 70 min
01Expressions, linear equations and inequalities, absolute value, ratios, percentages, exponents and roots: the core algebra behind a large share of SAT Math questions. You learn to set up equations from word problems and solve them quickly, with and without Desmos.
02Systems of equations, quadratics, polynomials, rational and radical expressions and exponential functions from the Advanced Math domain. Lessons show how to read a function's graph, rewrite expressions strategically and handle the harder questions in the second Math module.
03Angles, triangles, circles, polygons, coordinate geometry and transformations, plus right-triangle trigonometry. You learn which formulas the SAT reference sheet already gives you and which relationships you need to recognize on sight.
04Statistics, probability, data interpretation, sampling and regression from the Problem-Solving and Data Analysis domain. Lessons focus on reading tables, charts and scatterplots accurately, a skill that also helps with data-based Reading and Writing questions.
4 modules · 35 lessons · 2179 questions
On the test: 54 questions in 64 min
05The groundwork for Reading and Writing: sentence structure, parts of speech, clauses and the core grammar rules the SAT tests. Ideal if English is not your first language or you want a clean start before harder question types.
06Standard English Conventions in depth: punctuation, subject–verb agreement, pronouns, verb tense, modifiers and sentence boundaries. Each rule is taught with SAT-style sentences so you can spot the error pattern in seconds.
07Words in context, central ideas, inferences and text structure from Craft and Structure and Information and Ideas. You practice active reading strategies for short passages and build the academic vocabulary the test relies on.
08Sentence craft, paragraph development, essay and argument structure, revising and editing, and style and tone. The lessons build the writing judgment behind Expression of Ideas questions (choosing the clearest, most logical option) and carry over to school and college application writing.
Every module comes with SAT-style practice questions and an explanation for every answer. The bars show how many questions each module contains, so you can see where most of the practice is before you open it.
03 /How a lesson works
Every lesson in the course follows the same three-step rhythm. It is short enough to finish in one sitting and structured so that what you learn today is still there on test day.
Why short lessons?
Research on learning consistently shows that short, spaced sessions beat long cramming sessions. Lessons are sized so you can study a little most days.01 /
Short, illustrated slides explain a single concept with worked examples and the strategy that saves time on test day. The slides take about 10 minutes, so a lesson fits easily into a school evening.
02 /
Every lesson is followed by questions written in the Digital SAT format. You get instant feedback and a step-by-step explanation, so a wrong answer becomes something you learn from rather than a guess you forget.
03 /
Key words, rules and formulas go into flashcard decks. Rate each card as you review it, and the ones you find difficult come back in later sessions until they stick. Progress is tracked per module, so you always know what to revisit.
04 /Try before you sign up
The best way to judge an SAT course is to study with it. We have opened one complete lesson from each section, with no account, email or card required.
They are the same interactive slides students see inside the course, so you will know exactly what you are getting.
SAT Math
Work through a full lesson from the Advanced Algebra and Functions module: factoring, completing the square, the quadratic formula and how to choose the fastest method.
SAT Reading and Writing
See how SAT Sphere teaches short-passage reading: a read → question → verify blueprint, finding the central claim and eliminating trap answers.
05 /Flashcards and vocabulary
Strong vocabulary and quick recall of rules and formulas are worth points in both sections. Alongside the lessons, the course gives you tools that make reviewing quick. Try them below.
6,900+ cards cover high-frequency SAT words, grammar rules and math formulas. Rate each card from difficult to easy, and the cards you struggle with come back in later sessions while the ones you know drop out.
What does cogent mean?
Cogent refers to an argument that is not only clear, logical, and very convincing but also well-structured and easy to follow. It is often used in formal debates or persuasive writing where reasoning needs to be compelling, leaving little room for doubt.
Flip through a few example cards
01 / 08
Look up any word from a passage and see its definition, pronunciation, example sentence, synonyms and antonyms. Save words to review later or practice them in quick word games.
pedantic
adjective
Overly concerned with minor details or rules; displaying academic learning excessively.
“His pedantic nature made him point out every grammatical mistake.”
Synonyms:
Antonyms:
01 / 10
06 /Study plan and practice tests
Tell SAT Sphere your test date and how many days a week you can study. The planner spreads the modules across the weeks you have left, mixes in question practice and flashcard reviews, and adjusts when life gets in the way.
07 /Plans and pricing
The free plan unlocks a full course module and introductory materials, with no card required. Premium opens every module and all practice questions; Premium Plus adds all flashcard decks, custom practice exams and the full SAT AI tutor.
Try the platform with introductory materials and one full course module.
billed monthly
The complete Digital SAT course with a personal study plan.
billed monthly
Every tool we build, including custom exams and the SAT AI tutor.
billed monthly
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View plan comparison08 /FAQ
Straight answers to what students and parents ask most before starting: what the course includes, what is free, how long it takes and how the lessons work. If your question is not here, the full FAQ covers accounts, plans and the Digital SAT itself.
The course has 8 modules with 75 lessons covering every content domain of the Reading and Writing and Math sections. Each lesson combines interactive slides with SAT-style practice questions and explanations, and the course is supported by flashcards, a SAT dictionary, a personal study planner and timed practice tests.
Yes, partly. The free plan gives you full access to one course module and introductory SAT materials, and two complete example lessons are open without an account. Premium plans unlock every module, the full question bank and the extra study tools.
Working through every lesson and its practice questions takes about 38 hours. Most students spread that over 8 to 12 weeks with 30 to 60 minutes of study several times a week; the study planner compresses or stretches the schedule to match your test date.
No. The recommended order builds skills step by step, but every module stands on its own. If a diagnostic or practice test shows a weak area, you can jump straight to the module that covers it.
Yes. The course is written for the Digital SAT taken in the Bluebook app: short Reading and Writing passages with one question each, Math questions designed for the built-in Desmos calculator and adaptive two-module sections.
Lessons and practice questions are in English, the language of the test, so you practice with exactly the wording you will see on test day. The SAT Sphere website and its public study resources are available in several languages.
Your Digital SAT plan starts today
