The digital SAT has two sections, Reading and Writing and then Math, each split into two separately timed modules: 98 questions in 134 minutes of testing, with a 10-minute break between the sections. This guide explains the structure, how the adaptive modules work, what each section tests and the tools in the Bluebook app.
The test has two sections: Reading and Writing first, then Math. Each section is split into two modules, and each module is timed separately. A 10-minute break separates the two sections.
Inside a module you can skip ahead, go back, mark questions for review and change answers until the module's time runs out. When a module ends, it closes for good: you cannot return to Module 1 once Module 2 begins, and you cannot return to Reading and Writing during Math.
Each module also contains 2 pretest questions. These are questions being tried out for future tests. They look exactly like the others, they do not count toward your score, and you cannot tell which ones they are. That means each Reading and Writing module has 25 scored questions and each Math module has 20.
Tip: Because you cannot spot a pretest question, treat every question as if it counts. A question that seems strangely hard may be a pretest question, or it may simply be hard. Either way, give it a fair try, choose an answer, mark it if needed and keep going.
The digital SAT is a multistage adaptive test. "Adaptive" means the test adjusts to the student, but it adjusts between modules, not after every question. Here is the sequence for each section.
The College Board does not publish the cutoff that decides which Module 2 a student sees, and this book does not guess at one. Any chart that claims to tell you "how many you can miss" to reach the harder module is not based on published information.
The College Board also states that students are not advantaged or disadvantaged by which Module 2 they receive, and that the college and career readiness benchmarks can be reached on either path. The practical lesson: Module 1 deserves your full care and accuracy, and Module 2 deserves the same steady method. Chapter 3 turns this into a pacing plan.
Note: If Module 2 feels harder or easier than Module 1, do not try to read meaning into it during the test. You cannot change which module you received, and every question in front of you still counts. Keep working one question at a time.
The College Board organizes each section into four content domains. Each domain contains a set of skills, and this book teaches every skill under its official name. Knowing the domains also helps you read this book's diagnostic and practice-test results, which are sorted by skill and domain.
Reading and Writing
Every Reading and Writing question has its own short passage, or a pair of short passages, of 25 to 150 words. One four-option multiple-choice question follows each passage, with a single best answer. Passages come from four subject areas: literature, history/social studies, humanities and science. Some questions include a table, a bar graph or a line graph. Chapter 4 explains the order of the questions and gives you a general method for the whole section.
Math
About 75% of Math questions are four-option multiple choice. The other 25% or so are student-produced responses (SPR), where you type your own answer instead of choosing one. About 30% of Math questions are set in a context, such as a science, social studies or everyday situation, and most of those use 50 words or fewer.
Notice where the weight sits. Algebra and Advanced Math together make up about 70% of the Math section, so the chapters on linear equations, functions, expressions and nonlinear equations (Chapters 16–22) carry the most points. In Reading and Writing the four domains are closer in size, so no single domain can be skipped.
Bluebook includes the on-screen tools below. Practice with them on the free full-length practice tests in the College Board's Bluebook app before test day.
The calculator
A calculator is allowed on every Math question and is not allowed in Reading and Writing. The built-in calculator can be switched between scientific and graphing modes. You may also bring an approved handheld calculator, but calculators with computer algebra system (CAS) functionality are not allowed. The approved list changes, so confirm your model on the College Board website.
The reference sheet
The reference sheet gives area formulas for a circle, a rectangle and a triangle; the Pythagorean theorem; the two special right triangles (30°-60°-90° and 45°-45°-90°); and volume formulas for a rectangular solid, a cylinder, a sphere, a cone and a pyramid. It also states that a circle has 360 degrees and 2π radians of arc and that the angles of a triangle sum to 180 degrees. It does not include slope, line equations, the quadratic formula, the circle equation, trigonometric ratios, percent change or statistics formulas. Chapter 15 and Appendix D list everything you need to know by heart.
Scratch paper
Testing staff give you scratch paper and collect it at the end of the test. You may not bring your own paper, but you do bring pencils or pens for working on it. Practice with scratch paper at home, because some steps, such as setting up a system of equations or sketching a figure, are faster on paper than on screen.
Both Reading and Writing modules follow the same order, so you can predict what kind of question is coming and how hard it is likely to be.
The domain order is fixed, and questions on the same skill are grouped together. The order of skills inside each domain is the usual pattern, not a guarantee. The Command of Evidence questions, both textual and quantitative, come together in one group. Each module's 2 pretest questions sit among the questions on the same skill, so you will not notice them.
Because each skill group restarts at an easier level, difficulty in this section rises and falls several times in a module. Chapter 3 explains how to use that pattern for pacing.
Command of Evidence: Quantitative questions include a graphic, and the only kinds used are tables, bar graphs and line graphs. No calculation is needed: you compare values, spot the larger or smaller one, or notice a trend.
Read a graphic in this order.
Trap: A choice can describe the graphic accurately and still be wrong. If it reports a true value for the wrong group, the wrong year or the wrong measure, it does not complete the claim. Chapter 9 teaches you to match a claim's exact variables.
Adapted from Chapters 1 and 4 of the book.
Every exam fact on this page was checked against the official College Board pages below on 29 October 2026. Policies and tools change, so confirm details on the College Board website before test day.
Skill by Skill Prep is independent. SAT® is a trademark registered by the College Board, which is not affiliated with, and does not endorse, this website or book. Bluebook™ is a trademark of the College Board. Desmos is a trademark of Desmos Studio PBC. Practice results and ranges are study estimates, not official scores or admission predictions.
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