The ultimate guide to SAT mastery.
- 10 full-length practice tests to build test-day stamina and confidence
- A Desmos simulator to solve math questions faster
- 122 lessons that teach every skill the SAT tests
One payment, no subscription. The price rises to $149 at launch on October 25.
A tour of the library
Solve each question one small step at a time.
Desmos practice
Finish SAT Math with time to spare.
- Type each equation yourself, with your keyboard, as on test day.
- Each step is checked, and the graph shows what it means.
- The lessons cover graphs, tables, typing, and functions.
What value of is the solution to the equation below?
Graph the left side
Enter in input box 1. The resulting graph shows the value of the equation’s left side for each x.
- y=2x+5
Visual explanations
Understand every new term at a glance.
- Hover over or tap a key term in any lesson.
- A card opens with a drawing of the idea and a plain definition.
- Worked examples mark the exact word or number that changes.
A semicolon can join two independent clauses.
independent clause
A group of words with a subject and a verb that makes sense by itself as a complete sentence.
Example“The bus was late” can stand alone.
10 full-length practice tests
Build test-day stamina and confidence.
- Module 2 gets harder or easier from how you did on Module 1, as on the real SAT.
- Your score comes as a range, measured against College Board’s own practice tests.
- Each test runs on test‑day time: 2 hr 14 min, plus a 10‑minute break.
Test 8
1290–1370Most likely 1330
Reading and Writing 630–690Math 640–700
2 hr 14 min of testing, timed as on test day
- Reading and Writing27 questions a module
- Module 132 min
- Module 2Harder or easier, 32 min
- Break10 min
- Math22 questions a module
- Module 135 min
- Module 2Harder or easier, 35 min
Bluebook Simulator
Learn from every question you miss.
- It works like Bluebook, the app you take the SAT in, so test day feels familiar.
- Nothing extra shows during a test. The guides, the heatmap, and your results come after you submit.
After you submit
4 free questions in 7 minutes
Guided review. Work out each miss with “Guide me through this,” one small step at a time.
122 lessons, every skill mapped
Find the lesson for whatever trips you up.
- The skills the SAT tests most come first, so your time goes where the points are.
- Every lesson starts with a question for you to try.
- Search any skill and open its lesson in one step.
XP and the weekly leaderboard
Build the habits that raise your score.
- Every lesson question gives XP the moment you get it right: +20 on the first try, +10 after a miss.
- Practice tests give XP after you finish, for right answers and habits like leaving nothing blank.
- The weekly leaderboard shows each student only as a first initial and a picture they choose.
Hello, I’m
Tom Meli
SAT instructor
I’ve spent twenty years learning how to explain hard ideas so they stick.
- Teaching since
- 2006
- SAT focus since
- 2015
- My SAT as an adult
- 1550
I built Deep Test Prep to put those explanations in one place.
Read why I teach this wayP.S. I’m also working to change how students learn in high school and beyond. You can see what I’m building next at Play for Mastery.
Deep Test Prep Online Library
Preorder now. Start studying at launch.
- 10 full-length practice tests to build test-day stamina and confidence
- A Desmos simulator to solve math questions faster
- 122 lessons that teach every skill the SAT tests
- A step-by-step guide to every practice test question
- The Bluebook Simulator, so test day feels familiar
- A drawing for every key term, so new ideas make sense at a glance