Study Smarter. Score Higher.
Digital SAT Practice Tests That Push You Into the Top Percentiles.
What Makes Our Practice Tests Different
Our online tests mirror the digital SAT’s question types, content domains, and adaptive two-module structure. Every question is written to reflect the tone, logic, and reasoning style of the official exam.
Unmatched Accuracy
All exams include an adaptive second module—you’ll be placed in either an easier or more difficult Module 2 depending on your score in Module 1. Our advanced exams bump up the challenge level even more, with extra difficult questions on all modules to prepare you for the hardest questions you might see on the official exam.
Adaptive Difficulty
Our tutors have spent thousands of hours analyzing the digital SAT, designing our practice tests, and reverse-engineering the skills that drive high-level performance.
Built by Experts
Average score improvement after completing
our tests and tutoring:
250+ points
Take Online Adaptive Exams
Experience realistic digital test adaptive modules — including Desmos, annotation tools, and extended time accommodations.
Principia’s Diagnostic
Try out this test for free! Our diagnostic test was designed to identify any gaps in knowledge and testing strategies with extra-difficult questions. After you complete this exam, you’ll know exactly which question types to review and where to focus the rest of your test preparation. Please note that this is our most challenging test.
Includes:
1 full-length adaptive exam
Immediate results
Detailed score reports
Comprehensive answer explanations
Module analysis by question type
Time and pacing data
Performance by difficulty level
Standard Bundle
These four full-length adaptive tests are designed to be the perfect starting point for your SAT preparation. These tests are similar in difficulty level to the most recent SAT Bluebook exams—if you’d like to replicate the official exam experience as closely as possible, this is the bundle for you.
Includes:
4 full-length adaptive exams
Immediate results
Detailed score reports
Comprehensive answer explanations
Module analysis by question type
Time and pacing data
Performance by difficulty level
Access for 1 year
4 tests for $59.99
Advanced Bundle
If you are ready to push yourself to answer the most difficult questions that might appear on the SAT and you’re already confident with all of the fundamental question types, these four full-length adaptive exams will give you an extra challenge.
Includes:
4 full-length adaptive exams
Immediate results
Detailed score reports
Comprehensive answer explanations
Module analysis by question type
Time and pacing data
Performance by difficulty level
Access for 1 year
4 tests for $59.99
Comprehensive Bundle
This bundle includes all eight tests from the standard and advanced bundles. If you’re looking to take one practice test a week for the eight weeks leading up to your exam, buy all 8 tests for a discounted rate.
Includes:
8 full-length adaptive exams
$20 in savings
Immediate results
Detailed score reports
Comprehensive answer explanations
Module analysis by question type
Time and pacing data
Performance by difficulty level
Access for 1 year
8 tests for $99.99
Want More Support?
Pair your practice tests with expert guidance. We offer private 1:1 SAT tutoring, both across the world through our virtual platform and in-person in the Washington, D.C. metro area. Learn more about our SAT approach here, or schedule a free 20-minute consultation by clicking the button below to get started.
About the Digital
SAT
The SAT transitioned to a fully digital format in 2023–2024. Here’s what that means:
Two sections: Reading & Writing and Math
Each section has two adaptive modules, timed separately
Module 2 adjusts to your performance on Module 1
You can move freely within each module, but cannot return to the previous one once submitted
Our online adaptive practice tests replicate this structure precisely — preparing you for the pacing, navigation, and mental transitions unique to the digital format.
About
Our
Platform
Immediate Results
Once you complete an exam, results are available immediately, including an overall snapshot of your score and module-by-module breakdowns.
Time and Pacing
See how long you spent on each question.
Question by Question Review
Click the Detailed Summary page to review each question. You’ll have options to see your original response, the correct answer, and our comprehensive answer explanation—which includes a walkthrough of how to eliminate each incorrect answer.
Here’s a sneak peek into your testing experience.
Desmos
The Desmos graphing calculator is integrated seamlessly into the platform, just like on the official SAT Bluebook test.
Difficulty Breakdown
Are you making silly mistakes on easy questions, or are you consistently missing the hardest questions? View the difficulty breakdown to analyze your errors.
Question Type Breakdown
Review the tag analysis to track the types of questions you’re missing most—you’ll know exactly which question types to practice before taking your next test.
Prefer to practice on paper to start?
Buy our physical textbooks below.
This book contains linear versions of the standard bundle, designed for students beginning their SAT prep journey who are looking to master the fundamentals.
This book contains linear versions of the advanced bundle, designed for students who are looking to challenge themselves on more difficult questions.