What's on the AP World History Exam? Units, Weights, Prep

What's on the AP World History exam comes down to nine units, uneven weights, and four scored parts. If you know which units carry 12% to 15% and which sit at 8% to 10%, you can spend your study time better. This post breaks down the unit weights, the multiple-choice, short-answer, DBQ, and LEQ parts, plus the May 2027 format change.

It also shows how the $5 study guide and the $19 prep course line up with the test. If you are trying to choose between a quick printable review and a fuller course, you should have a clear answer by the end.

The nine units, and which ones matter most

If you are asking what's on the AP World History exam, start with the unit weights. The table below shows all nine units and the share each can take on the test.

The big thing to notice is this: Units 3 through 6 are heavier than the others. Land-Based Empires, Transoceanic Interconnections, Revolutions, and Consequences of Industrialization each count for 12% to 15%. The other five units each count for 8% to 10%.

That does not mean you can ignore the lighter units. A unit worth 8% to 10% still matters. But if your study time is limited, the heavier middle of the course deserves more of it. Those four units can shape a large share of your multiple-choice set, and they can show up in your writing tasks too.

It also helps to notice the course flow. The exam starts with The Global Tapestry and Networks of Exchange, then moves into empires, ocean links, revolutions, industrial change, world conflict, the Cold War era, and globalization. Your prep should follow that structure, but not give every unit the same time.

That is why the $5 AP World History: Modern study guide puts one chapter on each official unit and orders them heaviest-weighted first. It is built from the official units and weights, so your review starts where the exam puts the most value.

How to split your study time by weight

The unit weights tell you how to divide your time. A flat plan, where every unit gets the same attention, is easy to follow but not very efficient. A weighted plan is better because it matches what the exam can actually ask.

A simple way to think about it is in two groups. Group one is Units 3 to 6, each worth 12% to 15%. Group two is Units 1, 2, 7, 8, and 9, each worth 8% to 10%. The heavier group should get more of your time for reading, note review, and practice questions.

That does not mean the lighter units get rushed. They still make up a large part of the course, and they can appear in any part of the exam. But if you only have a short window, start with the heavier group, then fill in the lighter units after.

This is one reason the guide includes 2-week, 4-week, and 8-week study plans built from the exam weights. If you want a printed review you can mark up fast, the guide gives you a direct structure instead of making you sort it out on your own. It also includes 178 key terms, each with an example, 45 practice questions with every answer explained, common exam traps, and a 2-page cram sheet for the night before.

If you want to try the style first, use the free practice test. It has 25 original questions that follow the official course units and weights, with explanations after you answer.

The exam parts and what each one counts for

Knowing what's on the AP World History exam also means knowing how the score is built. The exam has four scored parts, and they do not count evenly.

Multiple choice is the biggest single share at 40% of the score, with 55 questions. That means content knowledge matters a lot. If you miss broad patterns, chronology, comparison, causation, and context across the units, that part can hurt fast.

Short answer is 20% of the score with 3 tasks. Then come the two long writing tasks: 1 document-based question for 25%, and 1 long essay for 15%. Together, the writing parts make up 60% of the score. So this is not an exam where memorizing terms alone is enough. You also need to explain evidence, make claims, and write clearly under time pressure.

That mix is why some students want more than a one-sheet review. The $19 AP World History: Modern prep course includes 10 chapters, 78 lessons, 80 quizzes, 54 interactive labs, plus a timed final practice exam and a final exam. Each final has a written part and a scoring guide, which is useful if you want practice moving from content recall to written response.

After you practice, the free AP score calculator lets you enter raw points by section to see an estimated 1 to 5 score. It is an estimate, not an official conversion, but it can help you see where your weak section is.

What changed for the May 2027 exam

The May 2027 exam keeps the same unit weights as 2026, so the content balance did not shift. The change is in the short-answer and long-essay setup.

For May 2026, students saw 4 SAQs but answered 3. Questions 3 and 4 had no stimulus, and you chose one of them. Students also had a choice of 3 LEQs.

For May 2027, there are 3 required SAQs, and all of them use sources. There is also 1 required LEQ. So the new version removes the old choice structure. You do not pick between SAQs at the end, and you do not pick from 3 LEQ options.

That matters for prep. First, source handling becomes part of every SAQ, not just some of them. Second, you need to be ready for one LEQ format instead of hoping your favorite prompt type appears. That makes balanced writing practice more important.

No 2027 scoring guidelines exist yet. The max points come from the 2026 scoring guidelines, plus the updated rubrics in the official course and exam description, and the official materials state that the rubrics are unchanged. The course was built for the May 2027 exam, so if you want practice aimed at this version, the $19 prep course is the better fit than piecing practice together from older formats.

If you mainly want content review, the guide still fits well because the weights are unchanged. If you want more 2027-format practice, the course does more.

How the $5 guide lines up with the exam

The guide is the simpler option, and for many students that is enough. The printable AP World History guide is $5, paid once, and it is an instant download. It is a 54-page PDF, so you can print it or use it on screen.

The design matches the exam in a few clear ways. First, it has one chapter per official unit. Second, it starts with the heaviest-weighted units first, which matches the smartest use of study time for most students. Third, it includes 45 practice questions with every answer explained, so you are not just reading summaries. It also flags common exam traps, which is helpful if you tend to miss questions for the same reason more than once.

The guide works best when you already have class notes or a textbook and want a tighter review tool. It is also a good pick if your test date is close and you need structure fast. The 2-page cram sheet and the built-in 2-week, 4-week, and 8-week plans make that easier.

Before you buy, you can try 10 sample questions on the guide page. That is useful if you want to see the level and style first. For a lot of students, $5 is the easier choice because it gives a focused review without asking for a bigger time commitment.

If that sounds like your situation, start with the guide. If you need more practice with writing and more step-by-step instruction, the course may fit better.

When to buy the course, or use an AP plan

The course makes more sense if you want fuller instruction, more checkpoints, and writing practice. It costs $19, paid once. On its own, that is still a small spend compared with the exam fee, which is $99 in the U.S., U.S. territories, or Canada, and $129 outside the U.S. The exam is given once a year in the first two weeks of May, so many students want prep that is focused and easy to start.

Here is a simple way to choose. Pick the guide if you mainly need a short, weighted review and a printable study plan. Pick the course if you want lessons, quizzes, labs, and final exam practice built for May 2027. If you want both for this subject only, the math is simple: $5 plus $19 is $24.

Plans are mostly for students taking more than one AP subject. AP Monthly is $29 a month for all 42 AP study guides and 36 AP prep courses, and AP Lifetime is $149 once for all 42 AP study guides and 36 AP prep courses. If you want AP, CLEP, and DSST together, the All-Access Bundle is $455 once and includes every CLEP and DSST prep course, 36 AP prep courses and every AP, CLEP and DSST study guide.

One more note on credit: AP scores run from 1 to 5, but each college sets its own AP credit policy, including what score it needs and what credit it gives. Check your college's policy before you register or buy prep. You can see every AP guide, course and free tool on the AP prep hub.

Frequently Asked Questions about AP World History Prep

Final Thoughts on AP World History Prep

If you wanted a clear answer to what's on the AP World History exam, it is this: nine units, with Units 3 to 6 carrying the most weight, plus four scored parts that reward both content knowledge and writing. If you want the cheapest focused review, start with the $5 study guide. If you want more instruction and 2027-format practice, choose the $19 prep course. If you are still deciding, try the sample questions and the free practice test, then pick the option that matches how much structure you need. To compare AP Monthly, AP Lifetime and the All-Access Bundle side by side, see plans and pricing.