Prac
Bluebook-style digital exam practice

Real exam questions,
graded and explained.

Practice SAT Math, AP Calculus, AP Statistics, and TMUA in the same style of interface you will see on test day — timer, question navigator, Desmos calculator. AI grades your free-response work against official rubrics and shows where each point was earned or lost.

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NO CARD · NO ACCOUNT REQUIRED TO START

32141+
Practice problems, tagged by topic and difficulty
SAT·AP·TMUA
Digital SAT, AP Calculus AB/BC, AP Statistics, TMUA — plus AMC, AIME, CEMC, UKMT
FRQ
Free-response scoring aligned to official rubrics
$0
Core practice is free — start without signing up
01 — What you get

Built around how the tests actually work

Not another problem dump. Each part of Prac mirrors a specific part of the real exam experience, from the interface to the scoring.

A.
Bluebook-style test interface
Timer, question navigator, flag-for-review, reference sheet, and built-in Desmos — arranged the way the College Board app arranges them, so test day feels familiar.
B.
Adaptive SAT modules
Two-module adaptive flow that mirrors the Digital SAT: your Module 1 performance determines the difficulty of Module 2.
C.
AP FRQ scoring by AIRUBRIC-BASED
Submit free-response answers and get point-by-point feedback against the official rubric — which criteria you met, which you missed, and why.
D.
Curated problem bank
Thousands of SAT, AP, TMUA, and competition-math problems (AMC, AIME, CEMC, UKMT, MAT) organized by unit, difficulty, and exam year. Filter to your weak topics and drill them directly.
E.
Tutor connection
Link your account to a teacher or tutor. They see your results and assign exams; you get targeted follow-up instead of generic homework.
F.
Online textbookIN DEVELOPMENT
Chapter-by-chapter study pages with practice problems inline, so you can read a section and attempt its exercises without switching tabs.
02 — Exam interface

Practice where it looks like the real thing

Familiarity is a score factor. The interface puts you in exam mode: dark toolbar, single-question view, circular answer choices, and the same tools you get on the actual test.

Countdown timer with module tracking
Time pressure is part of the test — practice under it.
Flag questions for review
Mark uncertain answers and return before submitting.
Built-in Desmos and reference sheet
The same calculator and formulas available on the real SAT.
prac — exam session
SECTION 2, MODULE 1
Math
TIME LEFT
28:44
QUESTION 4 OF 22

If f(x) = x² − 4x + 3, what is the value of f(5)?

A 6
B 8
C 12
D 15
DESMOS Graphing Calculator
y = x² − 4x + 3
Back 4 / 22 Next
03 — Problem bank
SAT 2,000+ Math problems across every tested topic
AP 1,500+ Calculus AB/BC and Statistics, MCQ and FRQ
TMUA 360+ Past papers 2017–2023, both papers, fully explained
COMP 1,000+ AMC 8/10/12, AIME, CEMC, UKMT, and MAT problems
WEEKLY + New problems are added every week

One library, tagged for drilling

Every problem carries its unit, difficulty, and exam year. Filter to the exact topics you miss, practice them in exam mode, and watch your accuracy by unit — not just an overall score.

Browse the exam library
04 — FRQ scoring

Free-response, scored like the reader scores it

Multiple choice checks itself. Free response is where students guess how they did — until the score report. Prac grades your FRQ work against the official rubric, point by point, any time you submit.

STEP 1
Write your solution
Type your full response with the math keyboard, or submit a photo of handwritten work.
STEP 2
AI applies the rubric
Each scoring criterion from the official rubric is checked against your response.
STEP 3
Read the breakdown
See which points you earned, which you lost, and what a full-credit response includes.

AP Calculus FRQ, 2018–2025

Rubric-aligned feedback for every released AP Calculus AB and BC free-response question from 2018 through 2025. Start with free credits; upgrade only if you use it.

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3 grading credits to start — no card
$0
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100 AI FRQ gradings / month, all exams unlocked
$35/30 days

Find out what you'd miss
before the test does.

A five-minute diagnostic shows your weak topics by unit. No card, no account.

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