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Prepzy tests you, finds concepts you’re actually weak on, and drills those.
— AP Calculus, free to start.
Answer one. Watch what Prepzy does.
Concept: Power Rule
If f(x) = x³ − 5x² + 2x, what is f′(2)?
Need help?
2 hints available
The mastery model in Prepzy finds the concept you’re weak on and writes a new question at your level.
Stuck? Prepzy gives you hints in 3 stages so you work it out yourself instead of guessing or looking it up.
Every wrong answer is tagged — Conceptual, Procedural, Computational, or Prerequisite Gap — so we know exactly what broke down.
5 layers, every time: the concept, the rule, the steps, the answer, and the mistake most people make on that question.
Your accuracy and mastery update, and your plan rebuilds around it. Your AI tutor tells you what to work on next, so you never open Prepzy wondering where to start.
Pick the one that sounds like you, then look at the same week with Prepzy in it.
You worked hard on the wrong unit.
Same week, aimed at what the test actually asks.
AI focus card
the one topic to hit today, updated daily
Custom session
your topic, MCQ or FRQ, difficulty, length
The first problem isn’t studying. It’s choosing.
Unlimited MCQs
generated fresh, never the same set twice
Graph questions
the visual ones the exam actually uses
Not the same 700 pages everyone else is working through.
Error breakdown
the exact reason behind each wrong answer
Concept mastery
unit by unit, then down to subtopic
The difference between a bad day and a real gap.
FRQs, graded
College Board rubric, point by point
Exam simulation
build your own exam or sit a full one
Practice questions are one thing. A timed section is another.
Spaced repetition
concepts come back before you forget them
Readiness forecast
predicted AP score, updated as you go
Knowing it tonight isn’t the same as knowing it on exam day.
Streaks
and achievements as you build them
Unlocks
cheat sheets, printables, question history
The longer your streak, the more Prepzy hands you.
Plus accuracy trends, a study plan that updates itself, and personalised suggestions.
Every wrong answer, broken into five layers — ending with the mistake most people make.
Prepzy tells you where you stand and what to do about it this week.
Coach Zone
We’ve got you. Here’s exactly what to do.
Top 3 Weakest Topics
Chain Rule
Unit 2 · Differentiation
u-Substitution
Unit 6 · Integration
Related Rates
Unit 4 · Applications
This Week’s Plan
You'll know you're getting better before your teacher does.
Questions
1,284
total answered
Mastery Score
74%
Proficient
Accuracy
81%
correct answers
Accuracy by Unit
Most FRQ marks go to working and justification, not the final number. Prepzy grades every one on the College Board rubric, point by point — unlimited FRQs, not the two your teacher assigns all year.
6 / 9
67% of available points
Part Breakdown
Correct value for the rate of change at t = 4
1 / 1 pt
States units with the answer
0 / 1 pt
Feedback
Your value is right, but the response never states the units. The rubric awards this point only when the units are given with the answer.
Drill one unit, or let Prepzy pick the topic that's costing you most.
Today’s Focus
Chain Rule
Lowest mastery in Unit 2, and it shows up on 4 of 8 free-response questions.
Or pick a unit
How much time do you have?
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