By Alex Stone7 min readLast fact-checked June 2026
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A 30-hour study plan for CLEP US History II allocates 12 hours to the post-1915 era (which carries roughly two-thirds of the exam's 120 questions), 6 hours to the late-19th century, 6 hours to foundational reading, and 6 hours to a practice exam plus weak-area drill. Most prep books split time evenly across the 1865-to-today range; the exam does not, and matching the actual weighting is the single biggest leverage point in this plan.
For the broader context on this exam, see the CLEP US History II pillar guide. For US History I prep, the parallel guide is the CLEP US History I 30-hour study plan. If deciding between the two exams, see whether to take both CLEP US History exams or just one.
Why the post-1915 era gets the most time
The CLEP US History II content outline weights the 20th century heavily. The official College Board exam description breaks the content into thematic areas, with substantial coverage of the New Deal, World War II, the Cold War, and the civil rights movement. When I took this exam for my degree at Thomas Edison State University, the post-1915 questions accounted for the majority of what I recalled at the end of the test.
Three reasons most students under-prepare on the post-1915 era:
- Prep books mirror textbook organization, not exam weighting. A typical US History survey textbook gives roughly equal chapter coverage to 1865-1900 and 1945-present, but the exam does not. Following the textbook proportionally over-studies the late 19th century.
- The post-1945 era feels "recent" and therefore familiar, which leads readers to skim it on the assumption that they already know it. Exam questions on the Cold War, civil rights, and post-war social movements require specific named-figure and named-policy recall that "feels familiar" does not deliver.
- Cause-and-effect chains span decades. The exam asks why questions ("Why did the New Deal reshape American politics?") more than when questions ("In what year did Roosevelt sign the Social Security Act?"). Cause-and-effect mastery requires connected study of long arcs, which the textbook-chapter-by-chapter approach disrupts.
The 30-hour plan below corrects for these by front-loading the post-1915 era.
The plan: 30 hours over 10 days

Days 1 to 3: Foundation reading (6 hours)
Re-read or skim the post-1865 chapters of a single survey textbook. Pick one and commit; don't switch between sources.
Recommended:
- OpenStax US History (free PDF). Chapters 16 through 32 cover the post-Civil-War era. Strong on the 20th century, well-edited.
- Brinkley's American History (textbook, used $20-30). The standard college-survey text most prep guides reference.
- Foner's Give Me Liberty (textbook, used $25-35). More politically-contextualized; good for cause-and-effect understanding.
What to do during foundation reading:
- Read chapter introductions and conclusions in full
- Skim chapter bodies for named figures, named legislation, named events
- Highlight the chapter summaries
- Don't take detailed notes; you'll re-read targeted sections in the drill phase
End of foundation reading: you should have a mental scaffold of the four post-1915 sub-eras (WWI/1920s, Depression/New Deal, WWII/early Cold War, civil rights/modern) plus the late-19th-century period.
Days 4 to 7: Post-1915 drill (12 hours)
Three hours per sub-era. The four sub-eras and their tested content:
Sub-era 1: WWI and the 1920s (1915-1929)
- US entry into WWI (1917) and the home-front mobilization
- The Treaty of Versailles, the League of Nations, and US isolationism
- The Red Scare (1919-1920) and immigration restriction (Emergency Quota Act 1921, Johnson-Reed Act 1924)
- The 1920s economy: consumerism, mass production, advertising, automobile culture
- Cultural shifts: Harlem Renaissance, prohibition (18th and 21st Amendments), women's suffrage (19th Amendment, 1920)
Sub-era 2: Great Depression and the New Deal (1929-1941)
- The 1929 crash and the structural causes (overproduction, debt, weak banking regulation)
- Hoover's response vs Roosevelt's first 100 days
- First New Deal (1933-1934): NIRA, AAA, CCC, TVA, FDIC, Glass-Steagall
- Second New Deal (1935-1936): Social Security, Wagner Act, WPA
- Court-packing (1937) and the late New Deal
- The New Deal's lasting effect on American political coalitions
Sub-era 3: WWII and early Cold War (1941-1960)
- US entry into WWII (Pearl Harbor, December 1941)
- The home front: Japanese internment, women's workforce mobilization, the GI Bill (1944)
- Major theaters: Pacific island-hopping, European liberation, the atomic bomb
- Yalta and Potsdam (1945) and the postwar settlement
- The early Cold War: Truman Doctrine (1947), Marshall Plan (1948), NATO (1949), Korean War (1950-1953)
- McCarthyism (1950-1954) and domestic anti-communism
Sub-era 4: Civil rights and modern era (1960-present)
- The civil rights movement: Brown v Board (1954), Montgomery Bus Boycott (1955-1956), Civil Rights Act (1964), Voting Rights Act (1965), Loving v Virginia (1967)
- Vietnam War (1955-1975) and the anti-war movement
- The Great Society (1964-1968): Medicare, Medicaid, War on Poverty
- Nixon, Watergate, and the imperial presidency
- The Reagan era and the end of the Cold War (1989-1991)
- Contemporary debates: globalization, technology, social-movement evolution
Per sub-era: 30 minutes of Khan Academy video, 60 minutes of textbook re-read, 60 minutes of practice questions (20 questions plus same-day error review), 30 minutes of weak-area notes.
Day 8: Late-19th century recognition (6 hours)
The late-19th century carries about 25 to 30 percent of the exam. It's not the majority, but it's not skippable. Hit it for recognition rather than depth:
- Reconstruction (1865-1877): the three Reconstruction Amendments (13th, 14th, 15th), the Reconstruction Acts (1867), the Compromise of 1877 ending Reconstruction. (The Reconstruction Amendments are tested in both US History I and II; the Reconstruction Amendments guide covers them in detail.)
- The Gilded Age (1877-1900): industrial expansion, robber barons (Carnegie, Rockefeller, Vanderbilt), the rise of organized labor (Knights of Labor, AFL, Pullman Strike 1894), Populism, the 1896 election (McKinley vs Bryan)
- The Progressive Era (1900-1915): T. Roosevelt's trust-busting, muckrakers (Sinclair, Tarbell, Steffens), Pure Food and Drug Act (1906), 16th-17th-19th Amendments, women's suffrage movement leading to the 19th Amendment
The late-19th century is the era of the 16th, 17th, 18th, 19th, and 20th-century constitutional amendments. The amendments cluster question is high-frequency.
Days 9 to 10: Practice exam and weak-area drill (6 hours)
One full-length timed practice exam: 90 minutes, then 60 to 90 minutes of review with every wrong answer reviewed against the textbook.
After the practice exam, identify the content area with the lowest accuracy. Spend the remaining time drilling that area: 20 to 30 additional practice questions, supplemented by targeted re-read of textbook chapters or Library of Congress primary sources for that period.
The Flying Prep CLEP US History II plan includes a full-length practice exam plus 800+ question bank. The official CLEP Examination Guide for US History II ($10 PDF) includes one practice exam written by the same group that writes the actual exam.
What this plan does NOT cover
Three things deliberately skipped:
- Memorization of specific dates beyond major turning points. Memorize: 1865, 1877, 1898, 1917, 1929, 1933, 1941, 1945, 1964-1965, 1973, 1989. Other dates: the decade is enough.
- Specific battles in detail. The exam tests recognition of major battles (Gettysburg, Antietam, D-Day, Iwo Jima, Inchon, Tet Offensive) but does not require knowing troop movements or tactical details.
- Detailed presidential biographies. Recognition by era and major policy is sufficient. The exam does not test trivia about presidents' personal lives.
After the 30 hours
The plan delivers a comfortable pass for students with prior US history exposure. For broader strategy, see the CLEP US History II pillar guide. For pairing with US History I, see whether to take both CLEP US History exams or just one. Natural next exams include CLEP American Government and the DSST history exams (Civil War & Reconstruction, Vietnam War).
Frequently asked questions
Is 30 hours really enough for someone who hasn't taken US History since high school?
For most adult learners with at least some prior exposure, yes. If your last US History class was more than 10 years ago and you remember little, add 10 to 15 hours to the foundation reading phase rather than rushing through it.
Should I take CLEP US History I first or US History II first?
Either works. Most students take them in numerical order because the chronological flow feels natural, but the exams are independent. If you find the 20th century more interesting, US History II first is a defensible choice.
How does the exam handle controversial topics (Vietnam, civil rights backlash, contemporary politics)?
Factually. The exam tests events, named figures, and cause-and-effect relationships rather than asking for opinions. Questions on the civil rights backlash, the Vietnam protests, or recent political shifts test recognition of who/what/when, not value judgments.
Should I memorize the names of all 20th-century presidents?
Recognition by era is sufficient. Memorize: Wilson, Harding/Coolidge/Hoover, FDR, Truman, Eisenhower, Kennedy, Johnson, Nixon, Reagan. For the others (Carter, Bush 41, Clinton, Bush 43, Obama), era recognition is enough; the exam rarely tests specific policy detail from the 1976-onward era.
What if practice exam shows me failing the post-1945 questions specifically?
Add a focused review session: re-read the Cold War, civil rights, and Great Society chapters in the textbook; watch the Khan Academy units on each; take another 30 questions in the post-1945 area only. Most students who failed practice in this area pass with one focused review week.
What if my practice exam shows me failing the late-19th-century questions?
This is the more common gap, since the plan front-loads the 20th century. Spend an extra 3 to 4 hours on the Reconstruction Amendments, the Gilded Age robber-baron and labor narrative, and the Progressive Era amendments. The late-19th-century questions usually concentrate around these themes.
Should I retake CLEP US History I before taking II?
No. The exams are independent; one does not require the other. If you passed I, II requires its own preparation but builds on the same skill set.
Where can I find the full content outline?
The College Board's free CLEP US History II fact sheet PDF lists the official content breakdown. The official study guide ($10 PDF) goes into more depth and includes a full practice exam.

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 June 2026
Deep dives
Go deeper on CLEP History of the United States II

Drill
The New Deal on CLEP US History II: the era that reshapes American politics
The New Deal carries roughly 12 to 15 percent of the exam's questions and reshapes the rest of 20th-century US history. Master the First New Deal, Second New Deal, and the political realignment they produced.
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Drill
Civil rights movement on CLEP US History II: laws, cases, and the political coalition that broke
The civil rights movement from 1954 to 1968 carries roughly 10 to 12 percent of the exam. The questions reward knowing the named cases, named laws, and the political realignment that followed (which broke the New Deal coalition by 1968).
Read it
See the full CLEP History of the United States II study guide for the practice quiz, study plan, and credit details.
