Our academic integrity stance.

Our position

Curve exists to help you learn AP material, not to help you fake the work. The “AP answer key” corner of the web is full of copy-paste sites that publish a letter and explain nothing.

That is not a good way to pass an AP exam in May, and it is not a site worth building. So we made a different bet: explain the reasoning, name the mistakes students actually make, and trust you to use that as study material rather than as a shortcut. If you want to know who publishes this site and why, start with about curve.

Walkthroughs vs. answer keys

Here is the difference, with a concrete example.

An “answer key” site says: AP Calc AB Progress Check Unit 3 Question 12 = B.

A Curve walkthrough says: Unit 3 tests composite functions and the chain rule. The most common Question 12-style trap is forgetting the “inner” function when differentiating f(g(x)). The correct approach: write f′(g(x)) · g′(x) explicitly before plugging in. If you skip that step, every chain-rule MCQ becomes a coin flip.

Same topic, completely different use. The first gets you through tonight’s assignment and leaves you no better at the next question. The second leaves you able to do the next question without us.

It also matters on exam day. College Board’s AP Exam Terms and Conditions (the agreement you accept before you start) list “use an answer key or receive information from other people about Test questions” among the behaviors that are not allowed. An answer key is not a study tool you grow out of. It is the thing the rules name.

When using Curve is fine

• You are studying on your own time. Read a walkthrough, do the Progress Check, check your reasoning against ours. Repeat until you can explain the idea without looking.
• You have already submitted an assignment. Use Curve to work out where you went wrong. This is exactly what walkthroughs are for.
• You are using the score calculator to estimate where you stand. There is no integrity question here; it is arithmetic.
• You are using the writing tools on your own drafts, to cut clichés and check length. Same.

AP Classroom will also show you the correct answers, and the rationales behind them, once your teacher sets an assignment’s results to a full report. That is the route your teacher controls, and it is the one to use first. Curve is for the part before and the part after.

When it isn’t

• Copying walkthrough text into an AP Classroom free-response box during the assignment. Rewriting it in your own words first does not make it your work, and the writing was the part you needed.
• Submitting Curve’s example responses as your own work for a graded assignment. Same logic.
• Bringing printed Curve material into the exam room. College Board’s list of what you cannot bring includes notes, and any reference guide or reference material whatsoever; whatever you are allowed to have, the proctor hands you in the room.
• Discussing exam questions afterward. College Board cancels a score automatically if you disclose multiple-choice content, which it never publishes and so treats as permanently off-limits, or free-response content it has not yet released. It spells out that talking about a multiple-choice question with a friend during a break counts.
• Sending us your school’s AP Classroom prompts and asking us to write the answer. We will not, and we will say so.

What College Board actually says

Most of what students believe about being watched inside AP Classroom is not something College Board publishes. What it does publish, in detail, is the rulebook for the exam.

On the exam. Alongside the answer-key rule above, the Terms and Conditions bar using any website or AI tool during the test or breaks, looking at notes or textbooks, and plagiarizing published or unpublished sources. A separate section on artificial intelligence and authentic work states that no part of a submission may be generated using AI tools, that submissions must be your own work, and that College Board runs its own checks for AI use and plagiarism in what students hand in.

Inside AP Classroom. College Board documents much less. Your teacher can see how long you spent on the assignment and on each question, how many separate sessions you used, and which answers you gave — and College Board’s own guidance to teachers says that data “does not prove misconduct occurred, but can inform your judgment.” If your teacher switches on the free LockDown Browser, you cannot print, copy, or open another website until you submit. Nothing in College Board’s published AP Classroom documentation describes paste detection or tab-switch monitoring.

Consequences if you cross the line

For anything inside AP Classroom, the consequences are your school’s, not College Board’s. Progress Checks are formative: College Board built them to measure progress through a unit and does not score them toward your AP grade. One thing has changed, though — from 2025-26 College Board tells teachers they may use Progress Checks as they think best, including for grades, where it previously advised against it.

On the exam itself the consequences are College Board’s, and they reach further than most students expect. It reserves the right to refuse to score an exam, or to cancel a score, when in its judgment there has been a security violation, a rule violation, a testing irregularity or an identification discrepancy. Disclosing secure content is canceled automatically. And a violation may also bar a student from College Board’s other assessments, naming AP, SAT and CLEP, for a period it decides.

None of this is meant as a scare tactic. Use Curve as a study tool, on your own time, and none of it is about you.

Report a problem

If you spot a walkthrough that reads more like an answer key than an explanation, or a guide we should rewrite, email contact@apcurve.org or use contact curve. A real person reads every message.

If you think someone is breaking the exam rules, that is College Board’s to handle rather than ours; it runs a test security hotline. And if your school’s policy is stricter than anything on this page, your school’s policy is the one that applies to you.

What we do with a message you send is in our privacy policy, and the rules for using the site are in the curve terms of service.

Written by Mahmudul Hasan. Updated September 2026. Sources: College Board’s AP Exam Terms and Conditions (2026 edition; College Board updates them each spring), Exam Security Policies, What Your Students Need to Know About AP Exams, Guidance for Artificial Intelligence Tools and Other Services, and the AP Classroom User Guide for Teachers.