AP Prep · 19 subjects

Score a 5 on every single AP.

19 subjects. Full-length practice tests written by expert AP instructors for the new digital AP and hybrid AP exams. Same MC counts, same FRQ structure, same timing as the official AP.

30,000+ AP students
My grind
Sarah · 6 weeks to test day
27
of 47
Practice tests taken
You've already taken more practice exams than the average student takes in their entire AP course.
2,148
questions
91h
studied
4.6
proj. score
Just completed
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Calc BC · Practice Test #5
just now · 94% correct
4.7
Bio · Practice Test #4
2h ago · 88% correct
4.4
Chem · Practice Test #2
yesterday · 82% correct
4.1
Calc AB · Practice Test #3
2 days ago · 100% correct
5.0
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Calc BC · Practice Test #6
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19 subjects · all major APs

The 19 APs students take most.

Each subject is built for self-study from day one — full-length practice tests with step-by-step solutions for every question. Same MC count, same free-response count, same timing as the real AP exam.

Math

Calc · Stats · Precalc
4 exams

Science

Bio · Chem · Physics
5 exams

Computer Science

CSA · CSP
2 exams

History

US · World · European
3 exams

Social Science

Psych · Macro · Micro
3 exams

English

Lang · Lit
2 exams
What you get

Built for the AP exam.

Practice that mirrors the real exam, with the breakdown to learn from every question.

5 full-length adaptive tests per subject

Tests adapt to your pace and weak spots. Every test mirrors the official AP digital format — same timing, same UI, same calculator.

95+ tests across 19 subjects

Free-response rubrics + sample essays

Every FRQ comes with the official scoring rubric annotated by our team — plus 3 sample student responses (a 5, a 3, and a 1) so you see what graders actually reward.

rubric library

Bluebook-perfect interface

For digital APs (CSP, Eng Lang, Psych, etc.) the practice UI matches Bluebook pixel-for-pixel — highlighter, tools panel, all of it.

digital APs covered
Free study guides

Every unit, explained before you practice.

Unit-by-unit study guides for all 19 AP courses, aligned to the current College Board framework. Unit 1 of every course is free to read, no account needed.

Every topic in the framework
Unit-by-unit guides that follow the current College Board course and exam description, topic number by topic number.
Figures, models, and worked examples
Original diagrams, data studies, and step-by-step walkthroughs for the ideas students usually memorize without understanding.
Misconception repair and a review map
Each topic names the mistake students actually make and how to fix it, then every unit closes with an error clinic and a review map.
Read Unit 1 free →19 courses · every unit · Unit 1 free in each
AP Biology · Unit 1 · Topic 1.1
Free
Structure of Water and Hydrogen Bonding
How does water’s molecular structure produce its biologically important properties?
Short answer
Water is polar, so neighboring molecules form temporary hydrogen bonds whose collective behavior produces cohesion, adhesion, thermal buffering, evaporative cooling, and surface tension.
Misconception · Hydrogen bonds do not make permanent chains
Mistake: water molecules are locked together by bonds as strong as the O–H bonds inside each molecule.
Correction: intermolecular hydrogen bonds are individually weaker and continually rearrange; their collective effect matters because many are present.
Practice that actually teaches

Every question. Full breakdown.

Pick a wrong answer and see why someone would pick it — not just an answer key. The dashboard tracks which question types you keep missing and pushes more of those into your next session.

AP Calculus AB · Unit 6 · Question 14
Hard
Multiple choice · 1 of 45
If g(x) = ∫₀ˣ (3t² − 4t + 1) dt, what is g'(2)?
Test Ninjas vs. AP Classroom

AP Classroom is what your teacher assigns. This is what you do on your own.

College Board’s AP Classroom is free with your class and worth using. It’s built for a teacher to run a course, not for you to prep by yourself — and that’s the gap we fill.

Feature
AP Classroom
Test Ninjas
Who can use it
AP ClassroomStudents in an AP class, through a teacher’s join code
Test NinjasAnyone. Self-studying? Every subject works as a standalone course.
Practice access
AP ClassroomMostly what your teacher assigns
Test NinjasAny unit, any time: section tests for every unit plus 5 full-length tests per subject
Answer explanations
AP ClassroomResults often locked until your teacher releases them
Test NinjasStep-by-step breakdown after every question, including why each wrong answer tempts people
AI help
AP ClassroomNone
Test Ninjas24/7 AI tutor for homework, concepts, and study strategies, included with the High School Success bundle
Free-response practice
AP ClassroomPast FRQs with scoring guidelines
Test NinjasRubrics annotated by our team, plus sample 5, 3, and 1 responses
Progress tracking
AP ClassroomClass reports built for your teacher
Test NinjasPersonal dashboard that flags which units are below the 5-threshold
Score guarantee
AP ClassroomNone
Test NinjasScore a 3 or higher, or your money back
Price
AP ClassroomFree with an AP class enrollment
Test NinjasFree 7-day trial, then from $15/mo

AP Classroom details as described by College Board. What you can access there depends on what your teacher assigns and unlocks.

From $15/mo · billed annually

All 19 AP subjects. One membership.

One price unlocks everything.

FAQ

Common questions.

Calculus AB · Calculus BC · Precalculus · Statistics · Biology · Chemistry · Physics 1 · Physics C: Mechanics · Physics C: E&M · Computer Science A · Computer Science Principles · US History · World History · European History · Psychology · Macroeconomics · Microeconomics · English Language · English Literature.

Score a 5. Or your money back.

7 days free — $0.00 due today. All 19 subjects.

Start my free 7 days →

Then $15/mo on annual · cancel anytime · score guarantee