Admissions & Academic Testing • Exam
CLEP Biology
Cover a full year of general biology in one exam and earn up to six credits.
Researched and maintained by TestPrepPilot Editorial BoardCollege admissions & credit-by-exam desk · Figures last verified August 2026
The short version
What is the CLEP Biology and is it worth it?
CLEP Biology is an ~115-question, 90-minute exam equivalent to a year-long introductory biology course. ACE recommends a score of 50 for about six semester hours at accepting schools.
- Commonly awards six semester hours — among the most credit-rich CLEP exams
- Covers molecular, organismal, and population biology equally
- Year-round at test centers and online with remote proctoring
- Strong choice for pre-health and science majors needing gen-ed credit
What is it?
What exactly is the CLEP Biology?
Cover a full year of general biology in one exam and earn up to six credits.
The CLEP Biology exam covers the breadth of a one-year college general biology course, split almost evenly among molecular and cellular biology, organismal biology, and population biology. It tests facts and principles as well as the ability to interpret data and draw conclusions. Strong performers can place out of both introductory biology semesters, making it one of the higher-credit CLEP exams.
The path in brief
- Confirm your school’s biology credit policy
- Register and pay the $97 fee
- Book a test center or remote-proctoring slot
- Review cells, heredity, ecology, and evolution
- Score 50+ for six credits
Before you book
Who is eligible to sit the CLEP Biology?
The test itself
What is the format of the CLEP Biology?
The CLEP Biology is administered by CLEP test center or CLEP with Remote Proctoring and runs 90 minutes and requires 50 (ACE credit-granting score) to pass.
| Administered by | CLEP test center or CLEP with Remote Proctoring |
|---|---|
| Questions | ~115 multiple choice |
| Time limit | 90 minutes |
| Pass mark | 50 (ACE credit-granting score) |
| Exam fee | $97 (2025–26) + test-center fee |
| Format | Multiple choice |
Content outline
What topics are on the CLEP Biology?
The CLEP Biology is weighted across 4 domains; the largest are Organismal Biology (34%), Molecular and Cellular Biology (33%), Population Biology (33%).
Weightings come from the official exam outline. Study time is best allocated in roughly these proportions rather than evenly across domains.
- Molecular and Cellular Biology 33%
Cells, enzymes, energy, genetics
- Organismal Biology 34%
Plant and animal structure, heredity
- Population Biology 33%
Ecology, evolution, behavior
- Scientific Skills and Inquiry Integrated
Data interpretation, hypothesis, science and society
Study materials
Which study guide should you use for the CLEP Biology?
Start with the exam sponsor's official content outline. If you also want one structured resource to work through, these are the Mometrix titles that match this exam.
This links to Mometrix's CLEP range rather than a single CLEP Biology title. Check that it lists an edition for CLEP Biology before you buy.
Affiliate links We may earn a commission if you buy through these links, at no extra cost to you. Mometrix has no say in what our exam guides cover. How we make money.
The path
How do you register for the CLEP Biology?
- 1
Create a College Board account10 minutes
Register at collegeboard.org with your legal name exactly as it appears on the photo ID you will bring on test day. One account covers the SAT, the PSAT-related assessments, AP and BigFuture.
- 2
Choose a weekend SAT date or let your school register you20 minutes
The SAT is booked directly by the student for weekend national administrations. PSAT 8/9, PSAT 10 and the PSAT/NMSQT are ordered and scheduled by the school, so for those you speak to your counselor rather than registering yourself.
- 3
Pay the fee or claim a fee waiver5 minutes
The US SAT registration fee is 68 dollars; international test takers add a regional fee of 43 dollars and, at some centres, a further test centre fee. Eligible US students get the SAT free through a counsellor-issued fee waiver, which also unlocks unlimited free score sends.
- 4
Install Bluebook and complete exam setup30 minutes
Download the free Bluebook app to your own laptop or tablet, or use a school-managed device, then run exam setup in the five days before test day to download the test and get your admission ticket.
Students who skip exam setup can be turned away or delayed at check-in.
- 5
Practise with Bluebook full-length tests and Khan Academy4 to 12 weeks
Six free adaptive full-length practice tests sit inside Bluebook, and Official Digital SAT Prep on Khan Academy is free and keyed to the same content domains.
- 6
Test, then review scores onlinetest day
Arrive with your admission ticket, acceptable photo ID and a charged device. Scores post to your College Board account, typically within about two weeks for weekend SAT dates.
The fine print
What are the retake and renewal rules for the CLEP Biology?
- Proctoring & delivery
- All SAT Suite tests are taken in Bluebook on a laptop or tablet, in a school or an authorised weekend test centre, under a live human proctor. There is no at-home option. Bluebook locks the device, and a built-in Desmos graphing calculator and formula sheet are available throughout the Math section; you may also bring your own approved non-CAS calculator.
- Retake policy
- There is no limit on SAT attempts and no mandatory waiting period beyond the eight national dates offered each year. The PSAT-related assessments are given once per school year per grade band and are not retaken on demand. Most selective colleges superscore across SAT sittings, taking your best Reading and Writing score and your best Math score.
- Score reporting
- The SAT reports a 400 to 1600 total built from two 200 to 800 section scores. The PSAT/NMSQT and PSAT 10 report 320 to 1520 with 160 to 760 sections, and the PSAT 8/9 reports 240 to 1440 with 120 to 720 sections, so results across the suite sit on one comparable scale. PSAT/NMSQT reports also carry an NMSC Selection Index of 48 to 228.
- Recertification
- SAT Suite scores do not expire and never need renewal, but colleges commonly ask for a score from within the last five years and most students test in the spring of eleventh grade and again in the autumn of twelfth grade. Only a PSAT/NMSQT taken in eleventh grade enters the National Merit competition.
- Refunds & rescheduling
- Cancelling an SAT registration by the change deadline costs 34 dollars; cancelling after the deadline but before test day costs 44 dollars. Changing test centre costs 34 dollars, and late registration costs 38 dollars. Fee-waiver students are not charged for cancellation or late registration.
Context
The digital SAT Suite compared
| Assessment | Grades | Score scale | Length | |
|---|---|---|---|---|
| PSAT 8/9 | 8 and 9 | 240 to 1440 | 2h 14m | |
| PSAT 10 | 10 (spring) | 320 to 1520 | 2h 14m | |
| PSAT/NMSQT | 10 and 11 (autumn) | 320 to 1520 | 2h 14m | |
| SAT | 11 and 12 | 400 to 1600 | 2h 14m |
What it pays
How much does this credential pay?
No direct occupation — a CLEP Biology score of 50 earns 6 semester hours of college credit (a full year of general biology), and the payoff is the education-return premium: bachelor’s-degree holders earn $1,493/week vs $1,059 for associate and $899 for high-school-only (BLS, 2023)
The direct answer is that CLEP Biology has no BLS occupation of its own — it is a credit-by-examination assessment whose payoff is the college credit it earns and the tuition and time it saves — so the salary story is the education-return premium that CLEP credit accelerates for degree completion, and for pre-health and life-science students the biology credit is often the largest single credit block on the CLEP catalogue. The relevant reference points from BLS: in 2023, workers with a bachelor’s degree earned a median weekly wage of about $1,493 versus about $1,059 for associate-degree holders and about $899 for high-school-diploma-only workers, and the May 2024 median wage across all occupations was $49,500. A score of 50 or higher on the 20-to-80 CLEP scale earns the ACE-recommended credit of six semester hours for CLEP Biology, which the ACE National Guide equates to a one-year college general biology course covering molecular and cellular biology, organismal biology, and population biology, and colleges that accept CLEP credit typically grant the six hours under their own policies, with some requiring a higher score or not accepting the credit for major-track sequences. The practical financial value is significant: a roughly $93 exam can replace a full year of introductory biology — at in-state public tuition that is often well over a thousand dollars for two semesters — and for pre-health students it clears the biology prerequisite that gates nursing and allied-health program applications. The honest framing is that the value is measured in credits, tuition saved, and time-to-degree, not in a salary line tied to the exam itself, and for a student deciding whether to sit it, the investment is the exam fee, roughly $93 plus a test-centre fee, and the preparation hours — which are substantial, because the exam samples a full year of material in 90 minutes.
| Measure | Figure | Source / note |
|---|---|---|
| Reference: median wage, all occupations | $49,500 | BLS Occupational Outlook Handbook, May 2024 |
| Reference: bachelor’s degree, median weekly earnings | $1,493 | BLS Education Pays, 2023 ($77,636/yr equivalent) |
| Reference: associate degree, median weekly earnings | $1,059 | BLS Education Pays, 2023 ($55,068/yr equivalent) |
| The exam itself | No direct occupation | A credit-by-examination test; ACE recommends 6 semester hours (one year of general biology) for a score of 50+ |
| ACE credit-granting score | 50 (on a 20-80 scale) | ACE National Guide; individual colleges set their own policies |
Job growth.BLS does not project growth for a CLEP exam; the relevant projections follow the occupations the earned degree feeds into, and the value is the six credit hours, tuition savings and time-to-degree it buys for pre-health and life-science students.
Source: BLS Education Pays
Your odds
What are the pass rates?
The College Board publishes no CLEP pass rate — it publishes only the 20-80 score scale and the ACE recommendation (50 for 6 semester hours); the civilian pass-rate figures circulating online are a stale 2017 release, not current official data
The core fact is that the College Board does not publish pass rates for CLEP Biology or any CLEP exam, and it has not published civilian pass-rate statistics since 2017 — so the percentages you see on prep sites are either that stale 2017 release being passed around or a vendor’s count of its own paying customers, neither of which is an official statistic. The only genuine institutional pass-rate data that exists is published by DANTES, the Department of Defense agency, and it covers military test takers only — a funded, self-selected population that is not a national sample, so we do not present it as one. What the College Board does publish and verify is the scoring structure: CLEP scores run on a scaled range of 20 to 80, the American Council on Education recommends a credit-granting score of 50, and the ACE National Guide equates that score to six semester hours of general biology, with individual colleges setting their own credit policies. The exam itself is approximately 115 multiple-choice questions answered in 90 minutes, covering the material of a one-year college general biology course in three major areas of roughly equal weight: molecular and cellular biology (33 percent), organismal biology (34 percent), and population biology (33 percent). Questions require three kinds of ability: knowledge of facts, principles and processes of biology; understanding how information is collected and interpreted, how one hypothesises from available information and draws conclusions and makes predictions; and understanding that science is a human endeavour with social consequences. Because the pass line is not published, the practical planning rule is to confirm your college’s credit policy first, then prepare until you are consistently at or above the ACE-recommended 50 on full timed practice exams, because that is the only score threshold that is officially on the record.
Read this before quoting the number.The College Board publishes no CLEP pass rate and no current civilian score distribution; the last civilian pass-rate release was 2017 and the figures online are stale or vendor-reported. DANTES publishes military-only pass-rate data that is not a national figure. What is published and verifiable is the 20-80 score scale, the ACE credit-granting score of 50 (6 semester hours), and the approximately 115-question, 90-minute format with the three major content areas.
Source: College Board — CLEP Biology
Your schedule
How long should I study for it?
80-120 hours over 8-12 weeks (or a 4-6 week review after a recent biology course) of focused study
Plan for 8 to 12 weeks and 80 to 120 hours of study if biology is new or rusty, or a 4-to-6-week structured review if you have recently passed a college or AP biology course, because CLEP Biology compresses a full year of general biology into approximately 115 questions in 90 minutes — under 47 seconds per question — and rewards breadth across all three major areas. The content distribution is published: molecular and cellular biology (33 percent), organismal biology (34 percent), and population biology (33 percent), so splitting study time roughly evenly across the three areas is the structural requirement. The most effective sequence is: first, take a full timed practice exam against the 20-to-80 scale to baseline, and log every miss by topic; second, work the molecular and cellular block — chemical composition of organisms, cells and membranes, enzymes, energy transformations, cell division, and the chemical nature of the gene — because it is the foundation for the other two areas; third, cover the organismal block — structure and function in plants with emphasis on angiosperms, plant reproduction and development, structure and function in animals with emphasis on vertebrates, animal reproduction and development, and the principles of heredity; fourth, cover the population block — principles of ecology, principles of evolution, principles of behaviour, and social biology; and fifth, rehearse the scientific-reasoning skill that the exam explicitly tests — interpreting data, forming hypotheses, drawing conclusions and making predictions — by working through experiment-based practice questions. In the final two weeks, take two or three more full timed exams and re-study the topics that still drag. Confirm your college’s CLEP credit policy before you invest the hours — some pre-health programs require a higher score or do not accept the credit for major-track sequences — and note the exam fee is roughly $93 plus a test-centre fee.
- Weeks 1-210-12 hrs/week
Baseline and molecular/cellular biology (33%)
- Take a full timed practice exam and log every miss by topic
- Study the chemical composition of organisms, cells and membranes
- Master enzymes, energy transformations, cell division and the chemical nature of the gene
- Weeks 3-410-12 hrs/week
Organismal biology (34%)
- Cover plant structure and function with emphasis on angiosperms, and plant reproduction and development
- Study animal structure and function with emphasis on vertebrates, and reproduction and development
- Master the principles of heredity, including Mendelian genetics
- Weeks 5-610-12 hrs/week
Population biology (33%)
- Study the principles of ecology, including food webs and biogeochemical cycles
- Cover evolution: natural selection, Hardy-Weinberg, speciation
- Learn principles of behaviour and social biology
- Week 78-10 hrs
Scientific reasoning and data interpretation
- Work experiment-based practice questions: hypotheses, conclusions, predictions
- Practise interpreting graphs, tables and experimental designs
- Review the energy pathways: glycolysis, the Krebs cycle, the electron transport chain, photosynthesis
- Weeks 8-98-10 hrs/week
Full timed exams and gap closing
- Take two or three full timed practice exams under real timing
- Re-lab every miss by the three content areas and re-study the weakest one
- Final pass over mitosis versus meiosis, Mendelian genetics and the energy pathways
Adjusting the pace
Recent college or AP biology course.Four to six weeks. Your course covers most of the blueprint; focus on the CLEP format (approximately 115 questions in 90 minutes, under 47 seconds per question), the scientific-reasoning items, and two or three full timed practice exams.
Pre-health student needing the prerequisite.Plan the full 8-12 weeks and do not rush: this is one of the largest CLEP exams, and many nursing and allied-health programs are strict about the credit — confirm their score and credit policy before you invest the hours.
Working full-time.Stretch the plan to 12-14 weeks at 6-8 hours a week, and use spaced repetition for the memorisation-heavy content — the pathways, the organ systems and the genetics rules.
How to study
How do I prepare most effectively?
The strategy that reliably passes CLEP Biology is "split your time across the three content areas, drill the scientific-reasoning items, and rehearse the 90-minute pace," because the exam samples a full year of biology in under 47 seconds per question and explicitly tests the ability to interpret data and draw conclusions, not just to recall facts. The single highest-yield habit is taking full timed practice exams in the real format from the start, because 115 questions in 90 minutes is the tightest pacing in the CLEP catalogue and the speed is itself a tested skill. A second proven approach is the energy pathways: glycolysis, the Krebs cycle, the electron transport chain and photosynthesis appear often and trip up candidates, and mastering them as a connected sequence pays across the molecular block. Third, learn Mendelian genetics until the mechanics are automatic — Punnett squares, dihybrid crosses and probability — because the heredity items reward fluency, not recognition. Fourth, practise the science-as-a-process questions: the exam asks you to interpret information, understand how data are collected, form hypotheses and make predictions, and a candidate who only memorises facts loses the reasoning half. Fifth, do not over-concentrate on the block you remember best — pre-health students often over-prepare on cellular biology and under-prepare on plant biology, which is a dependable share of the paper. Finally, remember there is no guessing penalty, so answer every question, and be honest about readiness: if practice scores are not clearing 50 with margin, the classroom course may be the better investment for a required prerequisite than a repeat exam fee.
Split time across the three areas
Molecular/cellular, organismal and population biology are roughly a third each. Weight your study hours evenly rather than over-preparing the block you remember best — plant biology and ecology are dependable shares candidates routinely under-prepare.
Master the energy pathways
Glycolysis, the Krebs cycle, the electron transport chain and photosynthesis appear repeatedly and trip up candidates. Learn them as one connected sequence — inputs, outputs and where each occurs in the cell.
Drill Mendelian genetics
Punnett squares, dihybrid crosses and probability questions reward fluency. Practise the mechanics until they are automatic, because the heredity items in the organismal block are among the most predictable on the exam.
Practise the reasoning half
The exam tests scientific reasoning — interpreting data, forming hypotheses, drawing conclusions, making predictions. Work experiment-based practice questions so the process-of-science items are not a surprise.
Rehearse the 90-minute pace
About 115 questions in 90 minutes is under 47 seconds per question. Take full timed exams from the start and build the skip-and-return discipline — flag anything over 75 seconds and come back.
Answer every question
There is no penalty for guessing on CLEP. An educated guess costs nothing and can move a borderline scaled score across the ACE-recommended 50 line.
What to buy
Which study resources are worth paying for?
CLEP Biology preparation is dominated by free and low-cost resources, and the buying decision is about study hours rather than product price: the College Board CLEP page defines the exact format and the three content areas, the ACE National Guide confirms the six-hour credit, and free resources like OpenStax Biology 2e and Khan Academy Biology cover the content to a standard above what the exam requires. The cost structure to plan against is the exam fee — roughly $93 paid to College Board plus a separate test-centre administration fee that varies by location, commonly $15 to $40 — and because this is the largest and most demanding of the science CLEPs, the real investment is the 80 to 120 hours of study the syllabus deserves, not the price of a prep product. The Modern States free CLEP biology course is worth calling out because it is mapped to the syllabus and Modern States has historically offered free exam vouchers to students who complete its courses, which removes even the $93 fee for eligible candidates. The comparison below separates the official and free resources from the modest paid options, with prices current to this review. The rule that works: build the content with free resources, rehearse the 90-minute, roughly 115-question timed format with practice exams until you score at or above 50 consistently, and spend money on a structured course only if self-study has already failed to reach the ACE-recommended 50 target — for a breadth-based, multiple-choice credit exam with a fully public blueprint, the free path is normally sufficient, and the hours matter more than the fee.
| Resource | Price | Format | Best for |
|---|---|---|---|
| College Board CLEP Biology page and exam description | Free | Official content outline and scoring facts | The authoritative syllabus — the three content areas and their weights |
| The CLEP exam itself | ~$93 plus a test-centre administration fee | Computer-delivered at a CLEP test centre | Required — the credit-earning event |
| OpenStax Biology 2e and Khan Academy Biology | Free | Open textbook and free video course | Building the content to a solid standard |
| CLEP practice-exam banks and review books | ~$10-50 | Online timed practice or printed book | Format calibration on the 90-minute timing and the reasoning items |
| Structured CLEP biology courses | ~$50-150 | Video course with practice | Only if self-study has not reached the 50 target; the content is otherwise free |
Prices approximate and dated to this review; the exam is offered year-round by appointment, and the test-centre administration fee is separate from the ~$93 exam fee. We do not rank by commission.
Avoid these
What mistakes do candidates most often make?
The most common mistake is treating CLEP Biology as a pure memorisation exam when roughly a third of the questions test scientific reasoning — interpreting data, forming hypotheses, drawing conclusions and making predictions — and the 90-minute, approximately 115-question pace (under 47 seconds per question) punishes anything slower than recognition. The second is over-preparing the block you remember best: pre-health students routinely spend hours on cellular biology while the organismal and population blocks — two-thirds of the paper — go shallow, and plant biology in particular is a dependable share of the organismal block that candidates skip. A third recurring error is neglecting the energy pathways, which appear across the molecular block and are a classic source of avoidable losses for candidates who memorise the names without the sequence. Candidates also routinely fail to rehearse the scientific-reasoning item style, walking in able to recall facts but unable to interpret a graph or an experimental design. Many sit the exam without confirming their college’s credit policy, discovering that a 50 earns nothing at a school that requires a higher score or does not accept the credit for their major sequence. Finally, some students rely on the stale pass-rate figures online as a difficulty signal; the honest target is the ACE-recommended 50 on a 20-80 scale, and the only reliable measure of readiness is a timed practice exam.
✕Studying it like a pure recall exam
✓About a third of the questions test scientific reasoning — interpreting data, forming hypotheses, drawing conclusions. Work experiment-based practice questions alongside the factual content, because recall alone fails the reasoning half.
✕Over-preparing the block you know best
✓Molecular/cellular, organismal and population biology are roughly a third each. Weight your hours evenly — and do not skip plant biology, which is a dependable share of the organismal block that candidates routinely under-prepare.
✕Neglecting the energy pathways
✓Glycolysis, the Krebs cycle, the electron transport chain and photosynthesis appear repeatedly. Learn them as one connected sequence with their inputs, outputs and locations, because they are a classic source of avoidable losses.
✕Ignoring the reasoning item style
✓The exam asks how information is collected and interpreted, and how conclusions and predictions follow from data. Practise graph and experiment-based items so the process-of-science questions are not a surprise on exam day.
✕Sitting without checking the credit policy
✓Confirm your college’s CLEP policy before investing the hours: some pre-health programs require a score above 50, and some do not accept the credit for major-track sequences. A 50 that earns nothing is the most expensive outcome on this list.
✕Trusting online pass-rate figures
✓No current official CLEP pass rate exists — the numbers online are a stale 2017 release or vendor self-reporting. Plan against the 50 target and your college’s policy, measured by timed practice exams, not a rumoured percentage.
What you'll face
What question types will I see?
The CLEP Biology exam is approximately 115 multiple-choice questions answered in 90 minutes, scored on a 20-to-80 scale with the ACE credit-granting score at 50 for six semester hours, and there is no penalty for guessing. The content covers a one-year general biology course in three major areas of roughly equal weight: molecular and cellular biology (33 percent), organismal biology (34 percent), and population biology (33 percent). Questions require three kinds of ability: knowledge of facts, principles and processes of biology; understanding how information is collected and interpreted, how one hypothesises from available information and draws conclusions and makes predictions; and understanding that science is a human endeavour with social consequences. The practical pacing is under 47 seconds per question, which makes recognition speed and the skip-and-return discipline essential — flag anything that takes more than about 75 seconds and come back to it. The recognition items dominate the factual content — the energy pathways, cell structures, genetics mechanics, organ systems and ecological principles — while the reasoning items test the process of science, and the application items connect biology to human and social consequences. The samples below are editor-written illustrations of the published blueprint, not live exam items.
Named structures, processes, organisms and rules — the pathway steps, the cell organelles, the genetics outcomes, the ecological principles. Finite in scope and the most bankable cluster when studied.
Interpreting data and experimental designs, forming hypotheses, drawing conclusions and making predictions. These reward the process-of-science skills the exam explicitly lists, not just memorised facts.
Applying biological principles to a described situation, and recognising biology as a human endeavour with social consequences — including human population and environmental topics within population biology.
Try these
Q1In aerobic respiration, what serves as the final electron acceptor at the end of the electron transport chain?
Answer:B
B is correct — oxygen is the final electron acceptor in the electron transport chain of aerobic respiration; it accepts electrons and combines with hydrogen ions to form water. A is wrong because carbon dioxide is a by-product of the earlier Krebs cycle stage, not an electron acceptor. C is wrong because water is the product formed when the electrons combine with oxygen and hydrogen, not the acceptor itself. D is wrong because glucose is the starting substrate of glycolysis, not an electron acceptor. This is a direct knowledge item from the energy-transformation content within molecular and cellular biology.
Q2A plant cell and an animal cell are compared. Which structure is present in the plant cell but absent in the animal cell?
Answer:C
C is correct — the cell wall is a defining plant-cell structure made largely of cellulose, and animal cells do not have one. A, B and D are all structures shared by plant and animal cells: mitochondria for energy transformation, the nucleus housing the genetic material, and ribosomes for protein synthesis. The item tests the distinguishing-feature knowledge that the molecular and cellular block uses, and the classic trap is picking a shared structure like mitochondria instead of the one that differs.
Q3A researcher measures beak depth in a finch population before and after a drought year and finds that the average beak depth increases after the drought, when only larger seeds were available. This observation is best explained as:
Answer:A
A is correct — the shift in average beak depth after a selective pressure (drought, larger seeds) is the classic natural-selection pattern: existing variation in beak depth was already present, and birds with larger beaks survived and reproduced more successfully. B is wrong because the drought does not directly cause the mutation; it changes which existing variants survive. C is wrong because it describes Lamarckian inheritance of an acquired characteristic, which does not explain the data. D is wrong because drift is non-selective, while the described change tracks a clear environmental pressure. This is the hypothesis-and-conclusion item style the exam explicitly tests.
Samples are editor-written illustrations of the published blueprint, not live exam items.
The big day
What should I expect on exam day?
The CLEP Biology exam is a 90-minute, approximately 115-question computer-delivered test taken by appointment at a CLEP test centre, with the score reported immediately on a 20-to-80 scale and the ACE credit-granting score at 50. The first thing to confirm is your test-centre administration fee, because CLEP charges roughly $93 for the exam plus a separate centre fee that varies by location — commonly $15 to $40 — and the second is your college’s credit policy, so you know the score you need before you sit. Bring a valid government-issued photo ID matching your CLEP account name exactly, and leave phones, smartwatches, study materials and any personal calculators at home — no calculator is used on this exam, and the centre provides scratch paper. Arrive at least 30 minutes early so check-in and the tutorial are complete before the clock starts. When the exam begins, work at a pace of under 47 seconds per question — most recognition items take less, so flag anything that exceeds about 75 seconds and come back to it rather than freezing, because there is no guessing penalty and every question must be answered. Budget the final minutes to revisit your flagged items and submit before the clock expires. Your score appears on screen the moment you submit, and the official report posts to your CLEP account within a few business days, after which you order the score to your registrar if your school requires an official copy — and note the six-credit outcome means a passing score is worth a full year of biology, so confirm exactly how your program applies it.
Bring
- Valid government-issued photo ID matching your CLEP account name exactly
- Your CLEP registration confirmation and scheduling details
- Payment for any test-centre administration fee due at the site
- A full night’s sleep — 115 questions in 90 minutes is a genuine stamina test
Leave at home
- Phones, smartwatches and earbuds
- All notes, formula sheets and study materials — the centre provides scratch paper
- Personal calculators — none is used on this exam
- Bags and coats beyond what the test centre permits
How the day runs
Rules in the room
- The exam is approximately 115 multiple-choice questions in 90 minutes, computer-delivered at a CLEP test centre.
- Scoring is on a 20-80 scale; the ACE credit-granting score is 50 for 6 semester hours, and individual colleges set their own policies.
- There is no penalty for guessing — answer every question.
- Personal calculators are not permitted — none is used on this exam.
- The exam fee is roughly $93 plus a separate test-centre administration fee.
- The score appears on screen immediately; the official report posts within a few business days.
Afterwards.Your score appears on screen the moment you submit and the official report posts to your CLEP account within a few business days, and a score of 50 or higher earns the ACE-recommended six semester hours of general biology credit — the largest single credit block on the CLEP catalogue — which most colleges accept under their own policies, some requiring a higher score or not accepting the credit for major-track sequences, so the immediate next step is checking your program’s CLEP policy and ordering the score report to the registrar if an official copy is required. For a pre-health student, those six hours replace a full year of introductory biology, which is often the single most expensive prerequisite on a nursing or allied-health application — clearing it by exam saves real tuition and compresses time-to-degree. If you fell short of 50, re-sit only after the practice scores genuinely clear the line: the exam samples a full year of material, so the gap is usually a coverage gap in one of the three content areas, and the fix is re-studying that area specifically rather than repeating the same material. The natural context is the credit-by-exam path itself: CLEP Biology is among the most demanding CLEPs, and the hours of preparation are real, but for a student who has recently taken college or AP biology, it is one of the highest-value credit sources available.
Reference
What are the key facts about the CLEP Biology?
CLEP Biology is a exam credential; awarded by College Board; the exam fee is $97 (2025–26) + test-center fee; typical preparation is 40-60 hours over 4-6 weeks (exam 90 minutes); holders typically earn College credit outcomes vary by school (ACE recommends 50).
| Credential | CLEP Biology |
|---|---|
| Type | Exam |
| Profession | Admissions & Academic Testing |
| Specialty | CLEP & Credit by Exam |
| Awarded by | College Board |
| Typical prep time | 40-60 hours over 4-6 weeks (exam 90 minutes) |
| All-in cost | ~$93 per exam (College Board) plus test-center fee |
| Typical salary range | College credit outcomes vary by school (ACE recommends 50) |
| Credit | ACE recommends ~6 semester hours at score 50 |
| Score scale | 20–80 scaled |
| Retake | 3-month wait; full fee each attempt |
| Delivery | Year-round at centers or online |
| Scope | National / Multi-state |
Real questions
Frequently asked questions about the CLEP Biology
How many credits does CLEP Biology grant?
ACE recommends about six semester hours for a score of 50, reflecting its coverage of a full year of general biology. Your college sets the exact amount and minimum.
Is CLEP Biology hard?
It is broad and moderately challenging. Students with a prior biology course usually need four to six weeks of focused review across the three content areas.
Does it include lab work?
No. The exam is multiple choice and tests conceptual and applied knowledge, not a hands-on lab. Some colleges may still require their own lab component.
Can I take it online?
Yes, via CLEP with Remote Proctoring or at a test center, reporting the same 20–80 scaled score.
Why do all four SAT Suite tests take the same 2 hours 14 minutes?
Since the digital transition every assessment in the suite uses the same blueprint: 54 Reading and Writing questions in two 32-minute modules and 44 Math questions in two 35-minute modules. Difficulty is calibrated to the grade band rather than by adding or removing time.
Can I take an SAT Suite test at home?
No. Unlike some other admissions tests, every College Board digital assessment must be taken in a supervised school or test centre, even though it runs on your own device.
How do fee waivers work?
US students in eleventh or twelfth grade who meet income eligibility get SAT fee waivers from their school counsellor. A waiver covers the registration fee, waives cancellation and late fees, and gives unlimited free score reports to colleges.
In short
Is the CLEP Biology worth it?
- Equivalent to a year of introductory biology
- ~115 questions in 90 minutes; score 50 for ~6 credits
- Even split across molecular, organismal, and population biology
- Among the highest-credit CLEP exams
Same awarding body
What other credentials does College Board award?
Worth comparing
How does the CLEP Biology compare with similar credentials?
Trust
Where does this information come from?
Everything above is taken from the awarding body's own published material. Fees, question counts and domain weights are revised regularly — check the official page before you pay.
- College Board Awarding body
- Official CLEP Biology exam page Exam page
Research confidence: high · Last reviewed 2026-08