Not all CLEP exams are created equal. Some let a well-prepared student earn 3 college credits in a single afternoon with a couple of weeks of review, while others fail more than half the people who sit for them. If you are trying to knock out general-education requirements quickly and cheaply, the smartest first move is not "which CLEP looks interesting" but "which CLEP am I most likely to pass." This page answers that with data.
The plain CLEP directory lists every exam alphabetically and stays neutral. This page does the opposite: it takes a side. Below is a ranked, pass-rate-backed verdict on the easiest CLEP exams, a clear-eyed look at the hardest CLEP exams, and a short framework for deciding which CLEP you should take first. It is meant to be the one authoritative CLEP exam difficulty ranking you need, rather than a stack of thin pages.
About the data. The pass rates below come from College Board's most recent published civilian pass-rate dataset, collected in 2017. College Board has not released an updated per-exam civilian breakdown since then, so these figures are the best broadly available numbers and are widely cited across the CLEP community. Military pass rates published annually by DANTES tend to run lower, because service members can test for free and often sit exams with little or no preparation, so we do not use them for this ranking. Treat every number as a directional average across thousands of test takers, not a personal prediction. Your own odds depend far more on your background and preparation than on any exam's headline rate.
Every exam Powerhouse Prep has a study page for is ranked below by pass rate, from the easiest CLEP exam at the top to the hardest at the bottom. Click any exam to open its free study guide and practice test. Pass rates are College Board 2017 civilian data. Credits are the American Council on Education (ACE) recommendation; most exams grant 3 semester hours, and a few language and composition exams grant more depending on your score. Your own college sets the final policy, so always confirm before you register.
| # | CLEP Exam | Pass Rate | Credits | Why it lands here |
|---|---|---|---|---|
| 1 | Spanish Language (1 & 2) | 91% | 6 to 9 | The highest pass rate of any CLEP, but only if you already speak or have studied Spanish. Heritage and conversational speakers clear it easily; true beginners do not. |
| 2 | College Composition Modular | 83% | 3 | Rewards general reading and writing judgment rather than memorized facts. If you can spot clear, correct, well-organized prose, you are most of the way there. |
| 3 | College Composition | 81% | 6 | Same skill set as the Modular version and worth a full 6 credits at most schools. The essay component is the main thing to practice. |
| 4 | Introductory Sociology | 80% | 3 | Intuitive vocabulary and big-picture concepts. A single focused review of key terms and theorists is usually enough. |
| 5 | Principles of Marketing | 79% | 3 | Common-sense business content and familiar terminology make this one of the friendliest business exams. |
| 6 | College Mathematics | 76% | 3 | Broad quantitative reasoning, not heavy algebra. Aimed at non-math majors, so the math stays light. |
| 7 | Analyzing and Interpreting Literature | 75% | 3 | Tests reading comprehension of passages you are given, so there is little to memorize in advance. |
| 8 | Human Growth and Development | 75% | 3 | Relatable lifespan-psychology content that many test takers find easy to reason through. |
| 9 | Principles of Macroeconomics | 72% | 3 | Logical and formula-light. Master a handful of core models and the graphs follow. |
| 10 | Principles of Microeconomics | 72% | 3 | Supply, demand, and marginal thinking. Concept-driven rather than calculation-heavy. |
| 11 | Information Systems | 71% | 3 | Approachable if you are comfortable with everyday computing and basic business technology terms. |
| 12 | Introductory Psychology | 70% | 3 | Popular first CLEP: high interest, familiar ideas, and a manageable amount of vocabulary. |
| 13 | History of the United States I | 69% | 3 | Covers pre-colonial times to 1877. Manageable if you have a decent grasp of early American history. |
| 14 | Western Civilization I | 68% | 3 | Ancient Near East through the early modern period. Broad but forgiving of a big-picture command. |
| 15 | Humanities | 68% | 3 | Huge range across art, music, and literature. Broad general knowledge helps more than deep study. |
| 16 | Principles of Management | 67% | 3 | Straightforward business concepts, though the terminology is dense enough to require review. |
| 17 | Social Sciences and History | 62% | 3 | Nine subjects in one exam. Breadth is the challenge; no single area is hard, but you cannot skip any. |
| 18 | English Literature | 60% | 3 | British literary history plus passage analysis. Easier if you already read widely. |
| 19 | Biology | 60% | 3 | A genuine science exam. Fair to pass with study, but the volume of terminology is real. |
| 20 | Natural Sciences | 57% | 3 | Combines biology and physical science for non-majors. Broad, and the physical-science half trips many people up. |
| 21 | History of the United States II | 56% | 3 | 1865 to the present. Denser and more detail-oriented than the first US history exam. |
| 22 | Financial Accounting | 55% | 3 | You either know the mechanics of debits, credits, and statements or you do not. Little room to guess. |
| 23 | American Government | 52% | 3 | Deceptively specific. Requires precise knowledge of institutions, court cases, and constitutional detail. |
| 24 | College Algebra | 52% | 3 | A real algebra exam with functions, equations, and no forgiveness for shaky fundamentals. |
| 25 | American Literature | 51% | 3 | Wide-ranging authors and periods, with questions that reward genuine familiarity with the texts. |
| 26 | Introductory Business Law | 51% | 3 | Precise legal terminology and doctrines. Easy to feel confident and still miss the exact rule. |
| 27 | Chemistry | 39% | 3 | The hardest CLEP by a wide margin. Stoichiometry, equilibrium, and thermodynamics demand real mastery. |
Pass-rate source: College Board CLEP civilian pass rates (2017), as compiled and republished by InstantCert and corroborated by the CollegeVine CLEP difficulty guide. Credit recommendations: College Board / ACE credit-granting recommendations. Figures we could not independently confirm against a primary College Board release are the exact per-exam splits for multi-credit language exams, which vary by score and institution and are shown as ranges.
The pattern at the top of the ranking is not an accident. The easiest CLEP exams almost all reward general skills you already carry into the test rather than a body of content you have to memorize from scratch.
Spanish Language tops every list at about 91 percent, but with a huge asterisk: that rate is driven by heritage speakers and students with real Spanish coursework behind them. If you already speak Spanish, it may be the single fastest block of credit you will ever earn, and it can be worth 6 to 9 credits at once. If you have never studied it, ignore the pass rate; it does not apply to you.
After Spanish, the reliably easy exams for almost anyone are the writing and reasoning tests. College Composition Modular (83 percent) and College Composition (81 percent) reward the ability to recognize clear, correct, well-structured prose, a skill most college-bound students already have. College Composition is especially attractive because a passing score is worth a full 6 credits at most schools. Right behind them, Introductory Sociology (80 percent), Principles of Marketing (79 percent), and College Mathematics (76 percent) all lean on intuitive concepts and everyday reasoning rather than dense, unfamiliar material.
The introductory social-science exams round out the easy tier. Introductory Psychology (70 percent) and Human Growth and Development (75 percent) cover material that feels familiar and interesting to most people, which makes the vocabulary far easier to retain. If you want a genuinely gentle first CLEP with no special background required, this cluster is where to start.
The bottom of the ranking is just as consistent as the top. The hardest CLEP exams are the ones that test precise, technical content where partial knowledge does not earn partial credit. You either know the exact rule, formula, or mechanism or you miss the question.
Chemistry is the hardest CLEP exam by a wide margin, with only about 39 percent of test takers passing. It expects genuine command of stoichiometry, chemical equilibrium, thermodynamics, atomic structure, and bonding, and it is effectively a full introductory college chemistry course compressed into 90 minutes. It is not a "review your notes for two weeks" exam; treat it like the real course.
The next tier of difficulty clusters between 51 and 55 percent. Introductory Business Law and American Literature both sit at 51 percent, American Government and College Algebra at 52 percent, and Financial Accounting at 55 percent. Business Law and American Government punish anything less than exact knowledge of specific doctrines, court cases, and constitutional detail. College Algebra and Financial Accounting are skills exams: if your algebra fundamentals are shaky or you do not truly understand how debits, credits, and financial statements work, there is very little room to guess your way through.
A step up from there, History of the United States II (56 percent) and Natural Sciences (57 percent) are demanding but very passable with focused study. None of these are impossible. They simply reward real preparation and leave weak preparation exposed, which is exactly why a pass-readiness check before you book the test matters most for the exams in this group.
A high pass rate is only useful if the credit actually helps you graduate. Use these four steps to choose your first CLEP.
Before anything else, check which CLEP exams your school accepts, the score it requires, and how many credits it grants. Policies vary widely, and some schools cap total CLEP credit. The easiest exam in the world is worthless if your registrar will not apply it toward your degree. This one step saves the most wasted effort.
Look at your degree plan and find an open general-education slot: a writing requirement, a social-science elective, a math requirement, a humanities credit. Then pick the highest-pass-rate CLEP that fills it. If you need a social science, Introductory Sociology or Introductory Psychology is a far smarter target than a harder exam that satisfies the same box.
The published pass rate is an average, but your personal odds swing hard on background. A fluent Spanish speaker should absolutely start with Spanish Language. A strong writer should grab College Composition for its 6 credits. Someone comfortable with numbers might find Principles of Macroeconomics easy even though its headline rate is lower than a subject they would struggle with.
If you have no special strengths and just want a win to prove the strategy works, choose from the top of the ranking: Introductory Sociology, College Composition Modular, or Introductory Psychology. Passing your first exam makes the next one far less intimidating, and the momentum is worth more than squeezing out one extra credit from a harder test.
Whatever you choose, do not walk in blind. Take a full-length timed practice exam first and pass it comfortably before you book the real thing. That single habit is the difference between the people at the top of these pass rates and the people at the bottom.
The single biggest predictor of which side of these pass rates you land on is simple: did you take a realistic, timed practice exam and pass it before test day? Powerhouse Prep is our iOS study app that covers every CLEP and DSST exam in one subscription, with real timed practice tests and a live pass-readiness score so you are never guessing whether you are actually ready. It is iPhone-only for now, and there is a 7 day free trial so you can judge it for yourself.
Try Powerhouse Prep free →By pass rate, Spanish Language is the easiest at about 91 percent, but only if you already have a Spanish background. For test takers with no special background, College Composition Modular (83 percent), College Composition (81 percent), and Introductory Sociology (80 percent) are the most reliably passable, because they reward general reading, writing, and reasoning skills rather than memorized content.
Chemistry is the hardest CLEP exam by a wide margin, with only about 39 percent passing. The next hardest are Introductory Business Law and American Literature (both 51 percent), College Algebra and American Government (both 52 percent), and Financial Accounting (55 percent).
Take a CLEP that your college accepts for credit and that plays to your strengths. For most people with no special background, a strong first CLEP is Introductory Sociology, College Composition Modular, or Introductory Psychology: high pass rates, approachable content, and 3 credits each. Always confirm your school's CLEP policy first, because a high pass rate is worthless if the credit does not transfer.
There is no overall limit on how many different CLEP exams you can take, and many students test out of a year or more of general-education credit. You cannot retake the same exam for three months after an attempt, and most colleges cap total CLEP or prior-learning credit, commonly somewhere between 30 and 60 credits.
No. A pass rate is an average across many test takers, not a prediction for you. The civilian rates here are College Board 2017 data, and DANTES military rates run lower because service members often test for free with little preparation. Difficulty is personal: a fluent Spanish speaker finds Spanish trivial, while a student who never took chemistry finds Chemistry brutal regardless of the average.