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Most readers can pass this exam with 30 hours of focused review. Here's the day-by-day breakdown that targets the 70 percent of the exam that lives in 1790 to 1877.
Built by a founder who used 27 CLEP and DSST exams to test out of 99 college credits.
By Alex Stone6 min readLast fact-checked May 2026
A 30-hour study plan for CLEP US History I allocates 18 to 20 hours to the post-1790 era (which carries about 70 percent of the exam), 6 to 8 hours to the colonial period, and 4 to 6 hours to timed practice exams. Most readers can pass at this depth. Most readers who fail do so not because they didn't study enough but because they reverse the allocation: front-loading the colonial era (about 20 percent of the exam) and running out of time before reaching the antebellum period.
This guide assumes you have at minimum a high-school US-history base: you know who George Washington was, you've heard of the Civil War, you can place "1776" within a decade. If you're starting from genuinely zero, double the hours below. If you took AP US History within the last two years and scored a 4 or 5, halve them.
For the broader context, see the CLEP US History I pillar guide. For the deep dive on where the points actually live, see the antebellum-period deep dive for CLEP US History I.
The exam is 120 multiple-choice questions in 90 minutes. To pass, you need a scaled score of 50 or higher (the ACE-recommended floor), which translates to about 60 percent correct on the underlying raw-score scale. That's 72 of 120 questions right.
About 84 of those 120 questions cover 1790 to 1877. The remaining 36 split across the colonial period (~24 questions) and primary historiography or methodology (~12). If you nail the post-1790 material and miss everything else, you can still pass.
Plan accordingly:
Adjust the calendar to your schedule. The critical thing is the order, not the dates.
Read or skim a single survey textbook from the colonial era through Reconstruction. Your three options:
Do not memorize. Skim. Note the major eras and recurring themes (continental expansion, slavery debate, federal-vs-state authority, immigration waves).

This is where you spend the bulk of your prep. Break it into four sub-eras:
Federalist era (1789 to 1801): Washington's presidency, Hamilton's financial system, the Whiskey Rebellion, the Alien and Sedition Acts, the rise of party politics (Federalists vs Democratic-Republicans), Adams's presidency, the election of 1800.
Jeffersonian and Jacksonian democracy (1801 to 1845): Louisiana Purchase, Lewis and Clark, the War of 1812, the Era of Good Feelings, the Missouri Compromise (1820), the Monroe Doctrine, Andrew Jackson's presidency (Indian Removal Act, Bank War, nullification crisis), the Whig vs Democrat realignment.
Antebellum reform and sectional crisis (1845 to 1861): Mexican-American War, Compromise of 1850, Kansas-Nebraska Act (1854), Dred Scott (1857), Bleeding Kansas, John Brown's raid, Lincoln's election, secession.
Civil War and Reconstruction (1861 to 1877): Fort Sumter, the major battles (Bull Run, Antietam, Gettysburg, Vicksburg, Atlanta, Appomattox), the Emancipation Proclamation, the 13th and 14th and 15th Amendments, Presidential vs Congressional Reconstruction, the Compromise of 1877.
For each sub-era, do this exact loop:
Three hours per sub-era × four sub-eras = 12 hours.
Now that you know where the points live, you can afford to skim the colonial era for recognition rather than mastery. Focus on:
Six hours, mostly on Khan Academy and quick textbook re-reads. You're not aiming for mastery here. You're aiming for recognition: when the exam mentions "Roger Williams," you should think "Rhode Island, religious tolerance" instead of staring blankly.
Take a full-length timed practice exam. Score it. Identify the two or three sub-eras where you scored worst.
Spend the next 4 hours patching those gaps: re-read the relevant textbook chapters, do 30 to 40 practice questions per weak area, drill the named events and figures.
Take a second full-length timed exam the day before test day. If you're at 60 percent or better on this exam, you're ready to take the real thing.
Two patterns recur across the exam often enough to be worth dedicated drills:
Drill 1: era → key events. Given an era ("1820s Jacksonian democracy"), name 5 major events. Given an event ("Compromise of 1850"), name the era and the major actors. Practice both directions.
Drill 2: cause and consequence. The exam loves multi-step causation questions. Given an event, what was its proximate cause and its longer-term consequence? Practice for the major sectional events: the Missouri Compromise, the Compromise of 1850, the Kansas-Nebraska Act, Dred Scott, John Brown's raid, Lincoln's election.
Five minutes of each drill in the morning before each prep session adds up to real fluency.
Three categories of content show up in popular study guides but are rarely tested on the exam itself:
If you find yourself spending 30 minutes on any of these, redirect to the post-1790 material instead.
Sleep. Don't cram. The exam tests knowledge you've already absorbed; one extra hour the night before will not move your score. Spend the evening doing two things:
If you can produce that timeline, you'll pass.
Pace at the exam: 90 minutes for 120 questions averages 45 seconds per question. Most are quick recognition; flag anything that takes more than 60 seconds and come back to it. There is no penalty for guessing, so do not leave anything blank.
Read the CLEP US History I pillar guide the morning of the test to refresh the content distribution one last time.
Probably not. Plan on 50 to 60 hours if you're starting from genuinely zero. Add the colonial period to your week-1 reading and double the post-1790 prep.
Memorize the era boundaries (1763, 1776, 1789, 1812, 1820, 1850, 1861, 1865, 1877) and the major events within them. You do not need to know that Andrew Jackson was inaugurated on March 4, 1829. You do need to know that he was president in the late 1820s and 1830s.
Khan Academy. The pacing is calibrated for this exam; the video transcripts are searchable; and the practice problems align with the content distribution. YouTube lectures vary wildly in quality and pacing.
That's a borderline pass. If your test is more than two weeks out, add 8 to 12 hours of post-1790 review. If it's within a week, take the exam; you're more likely to pass than fail at that score range.
Yes. The pillar guide includes a 4-week study plan that maps cleanly to the day-by-day breakdown above. Adjust pacing to your calendar.
No. Each CLEP requires its own scheduled exam slot. You can take II the next day or week, but they are separately timed and separately scored. If you need both, plan to study II for another 30 hours.
Khan Academy's US History course, sections 1.x through 6.x. Watch the videos at 1.5x speed if you're in a rush. For a second voice on the same material, Powerhouse Prep's CLEP archive covers many of the same topics in shorter article form.

Alex Stone founded Flying Prep after earning her bachelor's degree from Thomas Edison State University using 27 CLEP and DSST exams to test out of 99 credits. She built Flying Prep to help working adults and returning students take the same path.
Last fact-checked May 2026
Deep dives
Plan
Twenty representative questions weighted the way the real exam is, most falling between 1790 and 1877, each with the answer and a short explanation of why the wrong choices trap test-takers.
Read it
Decide
The two exams are independent: passing one does not require the other. Taking both yields 6 credits for ~60 hours of prep; taking one yields 3 credits for ~30 hours. Here is the decision math.
Read it
Drill
1607 to 1763 only earns about a third of the exam, but the questions cluster around six recurring themes. Master the themes and you cover the period in 8 to 10 hours of study.
Read itSee the full CLEP History of the United States I study guide for the practice quiz, study plan, and credit details.