A smarter path to
your target score.
Most SAT prep is generic. Praczo is built around your specific gaps — tracking 179 concepts, adapting your plan daily, and telling you exactly what to fix next.
Try it free — 3 days, no card
Find out exactly where you stand
Take a 30-question adaptive diagnostic on your first day. It covers all SAT domains and auto-adjusts difficulty as you answer. When it's done, you have two things most students never get: a reliable baseline score estimate, and a mastery score for every one of the 179 SAT concepts.
- Takes about 25 minutes
- Covers Math and Reading & Writing
- No guessing required — the adaptive format finds your level quickly
- Generates your personal concept weakness map immediately
Math · Algebra
A store sells notebooks for $3 each and pens for $1.50 each. If a customer buys a total of 8 items and spends $18, how many notebooks did they buy?
40% complete
Get a study plan built around your gaps
Once your concept map is ready, Praczo generates a day-by-day study plan. Enter your test date and goal score, and the plan prioritizes the concepts with the most room for improvement and the highest frequency on the SAT — so every study session is moving the needle on the things that matter most.
- Adapts to your test date and goal score
- Prioritizes high-frequency SAT concepts with low mastery
- Updates automatically as your mastery improves
- Sessions as short as 20 minutes — fits any schedule
Mon
Factoring quadratics
25 min
Tue
Word problem equations
30 min
Wed
Contrast transitions
20 min
Thu
Scatterplot interpretation
25 min
Fri
Full-length practice test
120 min
Drill the concepts that are costing you points
The heart of Praczo is concept-level practice. Every question is tagged to one or more of the 179 SAT concepts. When you get something wrong, you see exactly which concept it tests — and you can drill more questions for that specific concept with a single tap. No more vague feedback like "review Algebra."
- 5,000+ questions tagged by concept, domain, and difficulty
- Drill any concept instantly from your weakness map
- Built-in concept lessons — read the explanation, then practice it
- AI tutor available on every question for hints and step-by-step help
Setting up equations from word problems
Needs work
Subject-verb agreement
Proficient
Factoring quadratics
Needs work
Contrast transitions
Mastered
Similar triangles
Developing
Finding textual evidence
Mastered
Simulate the real thing
When you're ready to test under real conditions, Praczo's 3 full-length adaptive tests mirror the official Digital SAT format exactly. Module 2 difficulty adapts based on your Module 1 performance — just like on test day. Desmos calculator, highlighting, answer elimination, and bookmarking all included.
- 3 full-length adaptive practice tests
- Adaptive Module 2 difficulty (harder or easier based on Module 1)
- Desmos graphing calculator — the same tool on the real SAT
- Full post-test breakdown: concept-level accuracy, timing, score prediction
Desmos Graphing Calculator
Watch your score prediction climb
Your dashboard tracks mastery across all 179 concepts and converts it into a live SAT score prediction. As concepts improve, your predicted score rises. You always know where you are relative to your goal — and what to do next to close the gap.
- Live score prediction updated after every session
- Concept mastery scores (0–100%) with trend over time
- See which concepts improved most after each full test
- Pacing insights — flag questions you spent too long on
Estimated SAT Score
Common questions
How is this different from Khan Academy?
Khan Academy organizes practice by broad topic. If you miss a question about linear equations, it tells you to review linear equations — all of them. Praczo tracks 179 specific concepts, so it tells you you're weak at setting up equations from word problems but strong at slope-intercept form. That specificity is what makes the difference.
Do I need to take the diagnostic first?
It's strongly recommended. The diagnostic is what generates your concept weakness map and personalizes your study plan. Without it, the platform still works — but you'd be studying without knowing your starting point.
How accurate is the score prediction?
Praczo's score prediction is rule-based: it maps your average concept mastery across the SAT's domains to the College Board's published score distributions. It's a useful directional indicator — treat it as a well-calibrated estimate, not an exact prediction. Full-length practice tests give the most accurate score estimates.
How often does the study plan update?
The study plan recalculates after every practice session and full-length test. As your concept mastery improves, the plan shifts its focus — moving on from concepts you've mastered and prioritizing the ones that still need work.
What if I already know what I need to work on?
You can skip the diagnostic and jump straight to any concept in the concept map. Search or browse the full list of 179 concepts, pick the ones you want to drill, and start practicing immediately.
Is Praczo aligned with the current Digital SAT format?
Yes. All questions, tests, and tools reflect the current Digital SAT — including the two-module adaptive structure, the Desmos graphing calculator, and the Bluebook-style interface.
See it working on your score.
Take the diagnostic in 25 minutes. Get your concept map instantly. Start studying smarter today — for free.
3-day free trial · No credit card · 200-point guarantee